SOL003-VNFIndicator-API.yaml

        the NFVO, and might make sense only in very rare use cases.
        Consequently, the VNFM may either allow creating a subscription resource
        if another subscription resource with the same filter and callbackUri
        already exists (in which case it shall return the “201 Created” response
        code), or may decide to not create a duplicate subscription resource (in
        which case it shall return a “303 See Other” response code referencing
        the existing subscription resource with the same filter and
        callbackUri).
      parameters:
        - name: VnfIndicatorSubscriptionRequest
          description: Details of the subscription to be created.
          in: body
          required: true
          schema:
            description: >
              This type represents a subscription request related to VNF
              indicator value change notifications.
            type: object
            required:
              - callbackUri
            properties:
              filter:
                description: >
                  This type represents a subscription filter related to
                  notifications about VNF indicator value changes. At a
                  particular nesting level in the filter structure, the
                  following applies: All attributes shall match in order for the
                  filter to match (logical "and" between different filter
                  attributes). If an attribute is an array, the attribute shall
                  match if at least one of the values in the array matches
                  (logical "or" between the values of one filter attribute).
                type: object
                properties:
                  vnfInstanceSubscriptionFilter:
                    description: >
                      This type represents subscription filter criteria to match
                      VNF instances.
                    type: object
                    properties:
                      vnfdIds:
                        description: >
                          If present, match VNF instances that were created
                          based on a VNFD identified by one of the vnfdId values
                          listed in this attribute. The attributes "vnfdIds" and
                          "vnfProductsFromProviders" are alternatives to
                          reference to VNF instances that are based on certain
                          VNFDs in a filter. They should not be used both in the
                          same filter instance, but one alternative should be
                          chosen.
                        type: array
                        items:
                          description: >
                            An identifier with the intention of being globally
                            unique.
                          type: string
                      vnfProductsFromProviders:
                        description: >
                          If present, match VNF instances that belong to VNF
                          products from certain providers. The attributes
                          "vnfdIds" and "vnfProductsFromProviders" are
                          alternatives to reference to VNF instances that are
                          based on certain VNFDs in a filter. They should not be
                          used both in the same filter instance, but one
                          alternative should be chosen.
                        type: array
                        items:
                          type: object
                          required:
                            - vnfProvider
                          properties:
                            vnfProvider:
                              description: |
                                Name of the VNF provider to match.
                              type: string
                            vnfProducts:
                              description: >
                                If present, match VNF instances that belong to
                                VNF products with certain product names, from
                                one particular provider.
                              type: array
                              items:
                                type: object
                                required:
                                  - vnfProductName
                                properties:
                                  vnfProductName:
                                    description: |
                                      Name of the VNF product to match.
                                    type: string
                                  versions:
                                    description: >
                                      If present, match VNF instances that
                                      belong to VNF products with certain
                                      versions and a certain product name, from
                                      one particular provider.
                                    type: array
                                    items:
                                      type: object
                                      required:
                                        - vnfSoftwareVersion
                                      properties:
                                        vnfSoftwareVersion:
                                          description: |
                                            A version.
                                          type: string
                                        vnfdVersions:
                                          description: >
                                            If present, match VNF instances that
                                            belong to VNF products with certain VNFD
                                            versions, a certain software version and
                                            a certain product name, from one
                                            particular provider.
                                          type: array
                                          items:
                                            description: |
                                              A version.
                                            type: string
                      vnfInstanceIds:
                        description: >
                          If present, match VNF instances with an instance
                          identifier listed in this attribute. The attributes
                          "vnfInstanceIds" and "vnfInstanceNames" are
                          alternatives to reference to particular VNF Instances
                          in a filter. They should not be used both in the same
                          filter instance, but one alternative should be chosen.
                        type: array
                        items:
                          description: >
                            An identifier with the intention of being globally
                            unique.
                          type: string
                      vnfInstanceNames:
                        description: >
                          If present, match VNF instances with a VNF Instance
                          Name listed in this attribute. The attributes
                          "vnfInstanceIds" and "vnfInstanceNames" are
                          alternatives to reference to particular VNF Instances
                          in a filter. They should not be used both in the same
                          filter instance, but one alternative should be chosen.
                        type: array
                        items:
                          type: string
                  indicatorIds:
                    description: |
                      Match particular VNF indicator identifiers.
                    type: array
                    items:
                      description: |
                        An identifier that is unique within a VNF descriptor.
                      type: string
              callbackUri:
                description: |
                  The URI of the endpoint to send the notification to.
                type: string
                format: url
              authentication:
                type: object
                required:
                  - authType
                properties:
                  authType:
                    description: >
                      Defines the types of Authentication / Authorization which
                      the API consumer is willing to accept when receiving a
                      notification. Permitted values: * BASIC: In every HTTP
                      request to the notification endpoint, use
                        HTTP Basic authentication with the client credentials. 
                      * OAUTH2_CLIENT_CREDENTIALS: In every HTTP request to the
                        notification endpoint, use an OAuth 2.0 Bearer token, obtained
                        using the client credentials grant type.
                      * TLS_CERT: Every HTTP request to the notification
                      endpoint is sent
                        over a mutually authenticated TLS session, i.e. not only the
                        server is authenticated, but also the client is authenticated
                        during the TLS tunnel setup.
                    type: array
                    items:
                      type: string
                      enum:
                        - BASIC
                        - OAUTH2_CLIENT_CREDENTIALS
                        - TLS_CERT
                  paramsBasic:
                    description: >
                      Parameters for authentication/authorization using BASIC.
                      Shall be present if authType is "BASIC" and the contained
                      information has not been provisioned out of band. Shall be
                      absent otherwise.
                    type: object
                    properties:
                      userName:
                        description: >
                          Username to be used in HTTP Basic authentication.
                          Shall be present if it has not been provisioned out of
                          band.
                        type: string
                      password:
                        description: >
                          Password to be used in HTTP Basic authentication.
                          Shall be present if it has not been provisioned out of
                          band.
                        type: string
                  paramsOauth2ClientCredentials:
                    description: >
                      Parameters for authentication/authorization using
                      OAUTH2_CLIENT_CREDENTIALS. Shall be present if authType is
                      "OAUTH2_CLIENT_CREDENTIALS" and the contained information
                      has not been provisioned out of band. Shall be absent
                      otherwise.
                    type: object
                    properties:
                      clientId:
                        description: >
                          Client identifier to be used in the access token
                          request of the OAuth 2.0 client credentials grant
                          type.  Shall be present if it has not been provisioned
                          out of band. The clientId and clientPassword passed in
                          a subscription shall not be the same as the clientId
                          and clientPassword that are used to obtain
                          authorization for API requests. Client credentials may
                          differ between subscriptions. The value of
                          clientPassword should be generated by a random
                          process.
                        type: string
                      clientPassword:
                        description: >
                          Client password to be used in the access token request
                          of the OAuth 2.0 client credentials grant type.  Shall
                          be present if it has not been provisioned out of band.
                          The clientId and clientPassword passed in a
                          subscription shall not be the same as the clientId and
                          clientPassword that are used to obtain authorization
                          for API requests. Client credentials may differ
                          between subscriptions. The value of clientPassword
                          should be generated by a random process.
                        type: string
                      tokenEndpoint:
                        description: |
                          String formatted according to IETF RFC 3986.
                        type: string
        - name: Accept
          description: >
            Content-Types that are acceptable for the response. Reference: IETF
            RFC 7231
          in: header
          required: true
          type: string
        - name: Content-Type
          description: |
            The MIME type of the body of the request. Reference: IETF RFC 7231
          in: header
          required: true
          type: string
        - name: Authorization
          description: |
            The authorization token for the request. Reference: IETF RFC 7235
          in: header
          required: false
          type: string
      responses:
        '201':
          description: >
            Created

            The subscription was created successfully.  The response body shall
            contain a representation of the created subscription resource. The
            HTTP response shall include a "Location" HTTP header that points to
            the created subscription resource.
          headers:
            Content-Type:
              description: >
                The MIME type of the body of the request. Reference: IETF RFC
                7231
              type: string
              maximum: 1
              minimum: 1
            Location:
              description: The resource URI of the created VNF instance
              type: string
              format: url
            WWW-Authenticate:
              description: >
                Challenge if the corresponding HTTP request has not provided
                authorization, or error details if the corresponding HTTP
                request has provided an invalid authorization token.
              type: string
              maximum: 1
              minimum: 0
          schema:
            type: array
            items:
              description: >
                This type represents a subscription related to notifications
                about VNF indicator value changes.
              type: object
              required:
                - id
                - callbackUri
                - _links
              properties:
                id:
                  description: |
                    An identifier with the intention of being globally unique.
                  type: string
                filter:
                  description: >
                    This type represents a subscription filter related to
                    notifications about VNF indicator value changes. At a
                    particular nesting level in the filter structure, the
                    following applies: All attributes shall match in order for
                    the filter to match (logical "and" between different filter
                    attributes). If an attribute is an array, the attribute
                    shall match if at least one of the values in the array
                    matches (logical "or" between the values of one filter
                    attribute).
                  type: object
                  properties:
                    vnfInstanceSubscriptionFilter:
                      description: >
                        This type represents subscription filter criteria to
                        match VNF instances.
                      type: object
                      properties:
                        vnfdIds:
                          description: >
                            If present, match VNF instances that were created
                            based on a VNFD identified by one of the vnfdId
                            values listed in this attribute. The attributes
                            "vnfdIds" and "vnfProductsFromProviders" are
                            alternatives to reference to VNF instances that are
                            based on certain VNFDs in a filter. They should not
                            be used both in the same filter instance, but one
                            alternative should be chosen.
                          type: array
                          items:
                            description: >
                              An identifier with the intention of being globally
                              unique.
                            type: string
                        vnfProductsFromProviders:
                          description: >
                            If present, match VNF instances that belong to VNF
                            products from certain providers. The attributes
                            "vnfdIds" and "vnfProductsFromProviders" are
                            alternatives to reference to VNF instances that are
                            based on certain VNFDs in a filter. They should not
                            be used both in the same filter instance, but one
                            alternative should be chosen.
                          type: array
                          items:
                            type: object
                            required:
                              - vnfProvider
                            properties:
                              vnfProvider:
                                description: |
                                  Name of the VNF provider to match.
                                type: string
                              vnfProducts:
                                description: >
                                  If present, match VNF instances that belong to
                                  VNF products with certain product names, from
                                  one particular provider.
                                type: array
                                items:
                                  type: object
                                  required:
                                    - vnfProductName
                                  properties:
                                    vnfProductName:
                                      description: |
                                        Name of the VNF product to match.
                                      type: string
                                    versions:
                                      description: >
                                        If present, match VNF instances that
                                        belong to VNF products with certain
                                        versions and a certain product name,
                                        from one particular provider.
                                      type: array
                                      items:
                                        type: object
                                        required:
                                          - vnfSoftwareVersion
                                        properties:
                                          vnfSoftwareVersion:
                                            description: |
                                              A version.
                                            type: string
                                          vnfdVersions:
                                            description: >
                                              If present, match VNF instances that
                                              belong to VNF products with certain VNFD
                                              versions, a certain software version and
                                              a certain product name, from one
                                              particular provider.
                                            type: array
                                            items:
                                              description: |
                                                A version.
                                              type: string
                        vnfInstanceIds:
                          description: >
                            If present, match VNF instances with an instance
                            identifier listed in this attribute. The attributes
                            "vnfInstanceIds" and "vnfInstanceNames" are
                            alternatives to reference to particular VNF
                            Instances in a filter. They should not be used both
                            in the same filter instance, but one alternative
                            should be chosen.
                          type: array
                          items:
                            description: >
                              An identifier with the intention of being globally
                              unique.
                            type: string
                        vnfInstanceNames:
                          description: >
                            If present, match VNF instances with a VNF Instance
                            Name listed in this attribute. The attributes
                            "vnfInstanceIds" and "vnfInstanceNames" are
                            alternatives to reference to particular VNF
                            Instances in a filter. They should not be used both
                            in the same filter instance, but one alternative
                            should be chosen.
                          type: array
                          items:
                            type: string
                    indicatorIds:
                      description: |
                        Match particular VNF indicator identifiers.
                      type: array
                      items:
                        description: |
                          An identifier that is unique within a VNF descriptor.
                        type: string
                callbackUri:
                  description: |
                    The URI of the endpoint to send the notification to.
                  type: string
                  format: url
                _links:
                  description: |
                    Links for this resource.
                  type: object
                  required:
                    - self
                  properties:
                    self:
                      description: |
                        This type represents a link to a resource.
                      type: object
                      required:
                        - href
                      properties:
                        href:
                          description: |
                            URI of the referenced resource.
                          type: string
                          format: url
        '303':
          description: >
            See Other

            A subscription with the same callbackURI and the same filter already
            exists and the policy of the VNFM is to not create redundant
            subscriptions. The HTTP response shall include a "Location" HTTP
            header that contains the resource URI of the existing subscription
            resource. The response body shall be empty.
        '400':
          description: >
            Bad Request

            If the request is malformed or syntactically incorrect (e.g. if the
            request URI contains incorrect query parameters or a syntactically
            incorrect payload body), the API producer shall respond with this
            response code. The "ProblemDetails" structure shall be provided, and
            should include in the "detail" attribute more information about the
            source of the problem. If the request contains a malformed access
            token, the API producer should respond with this response. The
            details of the error shall be returned in the WWW-Authenticate HTTP
            header, as defined in IETF RFC 6750 and IETF RFC 7235. The
            ProblemDetails structure may be provided. If there is an application
            error related to the client's input that cannot be easily mapped to
            any other HTTP response code ("catch all error"), the API producer
            shall respond with this response code.The "ProblemDetails" structure
            shall be provided, and shall include in the "detail" attribute more
            information about the source of the problem.
          headers:
            Content-Type:
              description: The MIME type of the body of the response.
              type: string
              maximum: 1
              minimum: 1
            WWW-Authenticate:
              description: >
                Challenge if the corresponding HTTP request has not provided
                authorization, or error details if the corresponding HTTP
                request has provided an invalid authorization token.
              type: string
              maximum: 1
              minimum: 0
          schema:
            description: >
              The definition of the general "ProblemDetails" data structure from
              IETF RFC 7807 [19] is reproduced inthis structure. Compared to the
              general framework defined in IETF RFC 7807 [19], the "status" and
              "detail" attributes are mandated to be included by the present
              document, to ensure that the response contains additional textual
              information about an error. IETF RFC 7807 [19] foresees
              extensibility of the "ProblemDetails" type. It is possible that
              particular APIs in the present document, or particular
              implementations, define extensions to define additional attributes
              that provide more information about the error. The description
              column only provides some explanation of the meaning to Facilitate
              understanding of the design. For a full description, see IETF RFC
              7807 [19].
            type: object
            required:
              - status
              - detail
            properties:
              type:
                description: >
                  A URI reference according to IETF RFC 3986 [5] that identifies
                  the problem type. It is encouraged that the URI provides
                  human-readable documentation for the problem (e.g. using HTML)
                  when dereferenced. When this member is not present, its value
                  is assumed to be "about:blank".
                type: string
                format: URI
              title:
                description: >
                  A short, human-readable summary of the problem type. It should
                  not change from occurrence to occurrence of the problem,
                  except for purposes of localization. If type is given and
                  other than "about:blank", this attribute shall also be
                  provided. A short, human-readable summary of the problem
                  type.  It SHOULD NOT change from occurrence to occurrence of
                  the problem, except for purposes of localization (e.g., using
                  proactive content negotiation; see [RFC7231], Section 3.4).
                type: string
              status:
                description: >
                  The HTTP status code for this occurrence of the problem. The
                  HTTP status code ([RFC7231], Section 6) generated by the
                  origin server for this occurrence of the problem.
                type: integer
              detail:
                description: >
                  A human-readable explanation specific to this occurrence of
                  the problem.
                type: string
              instance:
                description: >
                  A URI reference that identifies the specific occurrence of the
                  problem. It may yield further information if dereferenced.
                type: string
                format: URI
        '401':
          description: >
            Unauthorized

            If the request contains no access token even though one is required,
            or if the request contains an authorization token that is invalid
            (e.g. expired or revoked), the API producer should respond with this
            response. The details of the error shall be returned in the
            WWW-Authenticate HTTP header, as defined in IETF RFC 6750 and IETF
            RFC 7235. The ProblemDetails structure may be provided.
          headers:
            Content-Type:
              description: The MIME type of the body of the response.
              type: string
              maximum: 1
              minimum: 1
            WWW-Authenticate:
              description: >
                Challenge if the corresponding HTTP request has not provided
                authorization, or error details if the corresponding HTTP
                request has provided an invalid authorization token.
              type: string
              maximum: 1
              minimum: 0
          schema:
            description: >
              The definition of the general "ProblemDetails" data structure from
              IETF RFC 7807 [19] is reproduced inthis structure. Compared to the
              general framework defined in IETF RFC 7807 [19], the "status" and
              "detail" attributes are mandated to be included by the present
              document, to ensure that the response contains additional textual
              information about an error. IETF RFC 7807 [19] foresees
              extensibility of the "ProblemDetails" type. It is possible that
              particular APIs in the present document, or particular
              implementations, define extensions to define additional attributes
              that provide more information about the error. The description
              column only provides some explanation of the meaning to Facilitate
              understanding of the design. For a full description, see IETF RFC
              7807 [19].
            type: object
            required:
              - status
              - detail
            properties:
              type:
                description: >
                  A URI reference according to IETF RFC 3986 [5] that identifies
                  the problem type. It is encouraged that the URI provides
                  human-readable documentation for the problem (e.g. using HTML)
                  when dereferenced. When this member is not present, its value
                  is assumed to be "about:blank".
                type: string
                format: URI
              title:
                description: >
                  A short, human-readable summary of the problem type. It should
                  not change from occurrence to occurrence of the problem,
                  except for purposes of localization. If type is given and
                  other than "about:blank", this attribute shall also be
                  provided. A short, human-readable summary of the problem
                  type.  It SHOULD NOT change from occurrence to occurrence of
                  the problem, except for purposes of localization (e.g., using
                  proactive content negotiation; see [RFC7231], Section 3.4).
                type: string
              status:
                description: >
                  The HTTP status code for this occurrence of the problem. The
                  HTTP status code ([RFC7231], Section 6) generated by the
                  origin server for this occurrence of the problem.
                type: integer
              detail:
                description: >
                  A human-readable explanation specific to this occurrence of
                  the problem.
                type: string
              instance:
                description: >
                  A URI reference that identifies the specific occurrence of the
                  problem. It may yield further information if dereferenced.
                type: string
                format: URI
        '403':
          description: >
            Forbidden

            If the API consumer is not allowed to perform a particular request
            to a particular resource, the API producer shall respond with this
            response code. The "ProblemDetails" structure shall be provided.  It
            should include in the "detail" attribute information about the
            source of the problem, and may indicate how to solve it.
          headers:
            Content-Type:
              description: The MIME type of the body of the response.
              type: string
              maximum: 1
              minimum: 1
          schema:
            description: >
              The definition of the general "ProblemDetails" data structure from
              IETF RFC 7807 [19] is reproduced inthis structure. Compared to the
              general framework defined in IETF RFC 7807 [19], the "status" and
              "detail" attributes are mandated to be included by the present
              document, to ensure that the response contains additional textual
              information about an error. IETF RFC 7807 [19] foresees
              extensibility of the "ProblemDetails" type. It is possible that
              particular APIs in the present document, or particular
              implementations, define extensions to define additional attributes
              that provide more information about the error. The description
              column only provides some explanation of the meaning to Facilitate
              understanding of the design. For a full description, see IETF RFC
              7807 [19].
            type: object
            required:
              - status
              - detail
            properties:
              type:
                description: >
                  A URI reference according to IETF RFC 3986 [5] that identifies
                  the problem type. It is encouraged that the URI provides
                  human-readable documentation for the problem (e.g. using HTML)
                  when dereferenced. When this member is not present, its value
                  is assumed to be "about:blank".
                type: string
                format: URI
              title:
                description: >
                  A short, human-readable summary of the problem type. It should
                  not change from occurrence to occurrence of the problem,
                  except for purposes of localization. If type is given and
                  other than "about:blank", this attribute shall also be
                  provided. A short, human-readable summary of the problem
                  type.  It SHOULD NOT change from occurrence to occurrence of
                  the problem, except for purposes of localization (e.g., using
                  proactive content negotiation; see [RFC7231], Section 3.4).
                type: string
              status:
                description: >
                  The HTTP status code for this occurrence of the problem. The
                  HTTP status code ([RFC7231], Section 6) generated by the
                  origin server for this occurrence of the problem.
                type: integer
              detail:
                description: >
                  A human-readable explanation specific to this occurrence of
                  the problem.
                type: string
              instance:
                description: >
                  A URI reference that identifies the specific occurrence of the
                  problem. It may yield further information if dereferenced.
                type: string
                format: URI
        '405':
          description: >
            Method Not Allowed

            If a particular HTTP method is not supported for a particular
            resource, the API producer shall respond with this response code.
            The "ProblemDetails" structure may be omitted in that case.
          headers:
            Content-Type:
              description: The MIME type of the body of the response.
              type: string
              maximum: 1
              minimum: 1
          schema:
            description: >
              The definition of the general "ProblemDetails" data structure from
              IETF RFC 7807 [19] is reproduced inthis structure. Compared to the
              general framework defined in IETF RFC 7807 [19], the "status" and
              "detail" attributes are mandated to be included by the present
              document, to ensure that the response contains additional textual
              information about an error. IETF RFC 7807 [19] foresees
              extensibility of the "ProblemDetails" type. It is possible that
              particular APIs in the present document, or particular
              implementations, define extensions to define additional attributes
              that provide more information about the error. The description
              column only provides some explanation of the meaning to Facilitate
              understanding of the design. For a full description, see IETF RFC
              7807 [19].
            type: object
            required:
              - status
              - detail
            properties:
              type:
                description: >
                  A URI reference according to IETF RFC 3986 [5] that identifies
                  the problem type. It is encouraged that the URI provides
                  human-readable documentation for the problem (e.g. using HTML)
                  when dereferenced. When this member is not present, its value
                  is assumed to be "about:blank".
                type: string
                format: URI
              title:
                description: >
                  A short, human-readable summary of the problem type. It should
                  not change from occurrence to occurrence of the problem,
                  except for purposes of localization. If type is given and
                  other than "about:blank", this attribute shall also be
                  provided. A short, human-readable summary of the problem
                  type.  It SHOULD NOT change from occurrence to occurrence of
                  the problem, except for purposes of localization (e.g., using
                  proactive content negotiation; see [RFC7231], Section 3.4).
                type: string
              status:
                description: >
                  The HTTP status code for this occurrence of the problem. The
                  HTTP status code ([RFC7231], Section 6) generated by the
                  origin server for this occurrence of the problem.
                type: integer
              detail:
                description: >
                  A human-readable explanation specific to this occurrence of
                  the problem.
                type: string
              instance:
                description: >
                  A URI reference that identifies the specific occurrence of the
                  problem. It may yield further information if dereferenced.
                type: string
                format: URI
        '406':
          description: >
            Not Acceptable

            If the "Accept" HTTP header does not contain at least one name of a
            content type that is acceptable to the API producer, the API
            producer shall respond with this response code. The "ProblemDetails"
            structure may be omitted in that case.        
          headers:
            Content-Type:
              description: The MIME type of the body of the response.
              type: string
              maximum: 1
              minimum: 1
          schema:
            description: >
              The definition of the general "ProblemDetails" data structure from
              IETF RFC 7807 [19] is reproduced inthis structure. Compared to the
              general framework defined in IETF RFC 7807 [19], the "status" and
              "detail" attributes are mandated to be included by the present
              document, to ensure that the response contains additional textual
              information about an error. IETF RFC 7807 [19] foresees
              extensibility of the "ProblemDetails" type. It is possible that
              particular APIs in the present document, or particular
              implementations, define extensions to define additional attributes
              that provide more information about the error. The description
              column only provides some explanation of the meaning to Facilitate
              understanding of the design. For a full description, see IETF RFC
              7807 [19].
            type: object
            required:
              - status
              - detail
            properties:
              type:
                description: >
                  A URI reference according to IETF RFC 3986 [5] that identifies
                  the problem type. It is encouraged that the URI provides
                  human-readable documentation for the problem (e.g. using HTML)
                  when dereferenced. When this member is not present, its value
                  is assumed to be "about:blank".
                type: string
                format: URI
              title:
                description: >
                  A short, human-readable summary of the problem type. It should
                  not change from occurrence to occurrence of the problem,
                  except for purposes of localization. If type is given and
                  other than "about:blank", this attribute shall also be
                  provided. A short, human-readable summary of the problem
                  type.  It SHOULD NOT change from occurrence to occurrence of
                  the problem, except for purposes of localization (e.g., using
                  proactive content negotiation; see [RFC7231], Section 3.4).
                type: string
              status:
                description: >
                  The HTTP status code for this occurrence of the problem. The
                  HTTP status code ([RFC7231], Section 6) generated by the
                  origin server for this occurrence of the problem.
                type: integer
              detail:
                description: >
                  A human-readable explanation specific to this occurrence of
                  the problem.
                type: string
              instance:
                description: >
                  A URI reference that identifies the specific occurrence of the
                  problem. It may yield further information if dereferenced.
                type: string
                format: URI
        '500':
          description: >
            Internal Server Error

            If there is an application error not related to the client's input
            that cannot be easily mapped to any other HTTP response code ("catch
            all error"), the API producer shall respond withthis response code.
            The "ProblemDetails" structure shall be provided, and shall include
            in the "detail" attribute more information about the source of the
            problem.
          headers:
            Content-Type:
              description: The MIME type of the body of the response.
              type: string
              maximum: 1
              minimum: 1
          schema:
            description: >
              The definition of the general "ProblemDetails" data structure from
              IETF RFC 7807 [19] is reproduced inthis structure. Compared to the
              general framework defined in IETF RFC 7807 [19], the "status" and
              "detail" attributes are mandated to be included by the present
              document, to ensure that the response contains additional textual
              information about an error. IETF RFC 7807 [19] foresees
              extensibility of the "ProblemDetails" type. It is possible that
              particular APIs in the present document, or particular
              implementations, define extensions to define additional attributes
              that provide more information about the error. The description
              column only provides some explanation of the meaning to Facilitate
              understanding of the design. For a full description, see IETF RFC
              7807 [19].
            type: object
            required:
              - status
              - detail
            properties:
              type:
                description: >
                  A URI reference according to IETF RFC 3986 [5] that identifies
                  the problem type. It is encouraged that the URI provides
                  human-readable documentation for the problem (e.g. using HTML)
                  when dereferenced. When this member is not present, its value
                  is assumed to be "about:blank".
                type: string
                format: URI
              title:
                description: >
                  A short, human-readable summary of the problem type. It should
                  not change from occurrence to occurrence of the problem,
                  except for purposes of localization. If type is given and
                  other than "about:blank", this attribute shall also be
                  provided. A short, human-readable summary of the problem
                  type.  It SHOULD NOT change from occurrence to occurrence of
                  the problem, except for purposes of localization (e.g., using
                  proactive content negotiation; see [RFC7231], Section 3.4).
                type: string
              status:
                description: >
                  The HTTP status code for this occurrence of the problem. The
                  HTTP status code ([RFC7231], Section 6) generated by the
                  origin server for this occurrence of the problem.
                type: integer
              detail:
                description: >
                  A human-readable explanation specific to this occurrence of
                  the problem.
                type: string
              instance:
                description: >
                  A URI reference that identifies the specific occurrence of the
                  problem. It may yield further information if dereferenced.
                type: string
                format: URI
        '503':
          description: >
            Service Unavailable

            If the API producer encounters an internal overload situation of
            itself or of a system it relies on, it should respond with this
            response code, following the provisions in IETF RFC 7231 [13] for
            the use of the "Retry-After" HTTP header and for the alternative to
            refuse the connection. The "ProblemDetails" structure may be
            omitted.
          headers:
            Content-Type:
              description: The MIME type of the body of the response.
              type: string
              maximum: 1
              minimum: 1
          schema:
            description: >
              The definition of the general "ProblemDetails" data structure from
              IETF RFC 7807 [19] is reproduced inthis structure. Compared to the
              general framework defined in IETF RFC 7807 [19], the "status" and
              "detail" attributes are mandated to be included by the present
              document, to ensure that the response contains additional textual
              information about an error. IETF RFC 7807 [19] foresees
              extensibility of the "ProblemDetails" type. It is possible that
              particular APIs in the present document, or particular
              implementations, define extensions to define additional attributes
              that provide more information about the error. The description
              column only provides some explanation of the meaning to Facilitate
              understanding of the design. For a full description, see IETF RFC
              7807 [19].
            type: object
            required:
              - status
              - detail
            properties:
              type:
                description: >
                  A URI reference according to IETF RFC 3986 [5] that identifies
                  the problem type. It is encouraged that the URI provides
                  human-readable documentation for the problem (e.g. using HTML)
                  when dereferenced. When this member is not present, its value
                  is assumed to be "about:blank".
                type: string
                format: URI
              title:
                description: >
                  A short, human-readable summary of the problem type. It should
                  not change from occurrence to occurrence of the problem,
                  except for purposes of localization. If type is given and
                  other than "about:blank", this attribute shall also be
                  provided. A short, human-readable summary of the problem
                  type.  It SHOULD NOT change from occurrence to occurrence of
                  the problem, except for purposes of localization (e.g., using
                  proactive content negotiation; see [RFC7231], Section 3.4).
                type: string
              status:
                description: >
                  The HTTP status code for this occurrence of the problem. The
                  HTTP status code ([RFC7231], Section 6) generated by the
                  origin server for this occurrence of the problem.
                type: integer
              detail:
                description: >
                  A human-readable explanation specific to this occurrence of
                  the problem.
                type: string
              instance:
                description: >
                  A URI reference that identifies the specific occurrence of the
                  problem. It may yield further information if dereferenced.
                type: string
                format: URI
    get: