SOL002-VNFLifecycleManagement-API.yaml

              This type represents a subscription related to notifications about
              VNF lifecycle 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 lifecycle 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
                  notificationTypes:
                    description: >
                      Match particular notification types. Permitted values: *
                      VnfLcmOperationOccurrenceNotification *
                      VnfIdentifierCreationNotification *
                      VnfIdentifierDeletionNotification The permitted values of
                      the "notificationTypes" attribute are spelled exactly as
                      the names of the notification types to facilitate
                      automated code generation systems.
                    type: array
                    items:
                      type: string
                      enum:
                        - VnfLcmOperationOccurrenceNotification
                        - VnfIdentifierCreationNotification
                        - VnfIdentifierDeletionNotification
                  operationTypes:
                    description: >
                      Match particular VNF lifecycle operation types for the
                      notification of type
                      VnfLcmOperationOccurrenceNotification. May be present if
                      the "notificationTypes" attribute contains the value
                      "VnfLcmOperationOccurrenceNotification", and shall be
                      absent otherwise.
                    type: array
                    items:
                      description: >
                        Value | Description ------|------------ INSTANTIATE |
                        Represents the "Instantiate VNF" LCM operation.    SCALE
                        | Represents the "Scale VNF" LCM operation.
                        SCALE_TO_LEVEL | Represents the "Scale VNF to Level" LCM
                        operation. CHANGE_FLAVOUR | Represents the "Change VNF
                        Flavour" LCM operation. TERMINATE | Represents the
                        "Terminate VNF" LCM operation. HEAL | Represents the
                        "Heal VNF" LCM operation. OPERATE | Represents the
                        "Operate VNF" LCM operation. CHANGE_EXT_CONN |
                        Represents the "Change external VNF connectivity" LCM
                        operation. MODIFY_INFO | Represents the "Modify VNF
                        Information" LCM operation.     
                      type: string
                      enum:
                        - INSTANTIATE
                        - SCALE
                        - SCALE_TO_LEVEL
                        - CHANGE_FLAVOUR
                        - TERMINATE
                        - HEAL
                        - OPERATE
                        - CHANGE_EXT_CONN
                        - MODIFY_INFO
                  operationStates:
                    description: >
                      Match particular LCM operation state values as reported in
                      notifications of type
                      VnfLcmOperationOccurrenceNotification. May be present if
                      the "notificationTypes" attribute contains the value
                      "VnfLcmOperationOccurrenceNotification", and shall be
                      absent otherwise.
                    type: array
                    items:
                      description: >
                        Value | Description ------|------------ STARTING | The
                        LCM operation is starting. PROCESSING | The LCM
                        operation is currently in execution. COMPLETED | he LCM
                        operation has been completed successfully. FAILED_TEMP |
                        The LCM operation has failed and execution has stopped,
                        but the execution of the operation is not considered to
                        be closed. FAILED | The LCM operation has failed and it
                        cannot be retried or rolled back, as it is determined
                        that such action won't succeed. ROLLING_BACK | The LCM
                        operation is currently being rolled back. ROLLED_BACK |
                        The LCM operation has been successfully rolled back,
                        i.e. The state of the VNF prior to the original
                        operation invocation has been restored as closely as
                        possible.
                      type: string
                      enum:
                        - STARTING
                        - PROCESSING
                        - COMPLETED
                        - FAILED_TEMP
                        - FAILED
                        - ROLLING_BACK
                        - ROLLED_BACK
              callbackUri:
                description: |
                  String formatted according to IETF RFC 3986.
                type: string
              _links:
                description: |
                  Links to resources related to 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
        '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
        '404':
          description: >
            Not Found

            If the API producer did not find a current representation for the
            resource addressed by the URI passed in the request, or is not
            willing to disclose that one exists, it shall respond with this
            response code.  Specifically in case of this task resource, the
            reason can also be that the task is not supported for the VNF LCM
            operation occurrence represented by the parent resource, and that
            the task resource consequently does not exist. The "ProblemDetails"
            structure may be provided, including in the "detail" attribute
            information about the sourceof the problem, e.g. a wrong resource
            URI variable.
          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: >
            Not Found

            If the API producer did not find a current representation for the
            resource addressed by the URI passed in the request, or is not
            willing to disclose that one exists, it shall respond with this
            response code.  The "ProblemDetails" structure may be provided,
            including in the "detail" attribute information about the source of
            the problem, e.g. a wrong resource URI variable.
          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
    delete:
      description: |
        The DELETE method terminates an individual subscription.
      responses:
        '204':
          description: >
            No Content

            The subscription resource was deleted successfully. The response
            body shall be empty.
          headers:
            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
        '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: