swagger: "2.0"

info:
  version: "1.2.1-impl:etsi.org:ETSI_NFV_OpenAPI:1"
  title: SOL003 - VNF Indicator interface
  description: >
    SOL003 - VNF Indicator interface
    IMPORTANT: Please note that this file might be not aligned to the current
    version of the ETSI Group Specification it refers to. In case of
    discrepancies the published ETSI Group Specification takes precedence.
    Please report bugs to https://forge.etsi.org/bugzilla/buglist.cgi?component=Nfv-Openapis&list_id=61&product=NFV&resolution=
  license:
    name: "ETSI Forge copyright notice"
    url: https://forge.etsi.org/etsi-forge-copyright-notice.txt

externalDocs:
  description: ETSI GS NFV-SOL 003 V2.7.1
  url: https://www.etsi.org/deliver/etsi_gs/NFV-SOL/001_099/003/02.07.01_60/gs_NFV-SOL003v020701p.pdf

basePath: "/vnfind/v1"

schemes:
  - https

consumes:
  - "application/json"
produces:
  - "application/json"

paths:
  ###############################################################################
  # API Versions                                                                #
  ###############################################################################
  '/api_versions':
    $ref: '../../endpoints/SOL002SOL003_endpoints.yaml#/endpoints/api-versions'

  ###############################################################################
  # VNF indicators                                                              #
  ###############################################################################
  '/indicators':
    #SOL003 location: 8.4.2
    get:
      description: >
        Get Indicator Value.
        The GET method queries multiple VNF indicators.
        This method shall follow the provisions specified in the tables 8.4.2.3.2-1 and 8.4.2.3.2-2
        for URI query parameters, request and response data structures, and response codes.
      parameters:
        - name: Accept
          description: >
            Content-Types that are acceptable for the response.
            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
        - name: filter
          description: >
            Attribute-based filtering expression according to clause 5.2 of ETSI GS NFV-SOL 013.
            The VNFM shall support receiving this parameter as part of the 
            URI query string. The NFVO may supply this parameter. 
            All attribute names that appear in the VnfIndicator and in 
            data types referenced from it shall be supported by the VNFM 
            in the filter expression.
          in: query
          required: false
          type: string
        - name: nextpage_opaque_marker
          description: >
            Marker to obtain the next page of a paged response. Shall be 
            supported by the VNFM if the VNFM supports alternative 2 (paging) 
            according to clause 5.4.2.1 of ETSI GS NFV-SOL 013 for this resource.
          in: query
          required: false
          type: string
        - name: Version
          description: >
            Version of the API requested to use when responding to this request.
          in: header
          required: true
          type: string
      responses:
        200:
          description: >
            200 OK

            Shall be returned when information about zero or more VNF indicators has been queried successfully.
            The response body shall contain in an array the representations of all VNF indicators that match
            the attribute filter, i.e. zero or more representations of VNF indicators as defined in clause 8.5.2.2.
            If the "filter" URI parameter was supplied in the request, the data in the response body shall have
            been transformed according to the rules specified in clause 5.2.2 of ETSI GS NFV-SOL 013.
            If the VNFM supports alternative 2 (paging) according to clause 5.4.2.1 of ETSI GS NFV-SOL 013
            for this resource, inclusion of the Link HTTP header in this response shall follow the provisions
            in clause 5.4.2.3 of ETSI GS NFV-SOL 013.
          headers:
            Content-Type:
              description: >
                The MIME type of the body of the request.
                Reference: IETF RFC 7231
              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
            Version:
              description: >
                Version of the API used in the response.
              type: string
              maximum: 1
              minimum: 1
            Link:
              description: >
                Reference to other resources. Used for paging in the present document, see clause 4.7.2.1.
              type: string
              maximum: 1
              minimum: 0
          schema:
            type: array
            items:
              $ref: "../../definitions/SOL002SOL003VNFIndicator_def.yaml#/definitions/VnfIndicator"
        400:
          $ref: "../../responses/SOL002SOL003_resp.yaml#/components/responses/400"
        401:
          $ref: "../../responses/SOL002SOL003_resp.yaml#/components/responses/401"
        403:
          $ref: "../../responses/SOL002SOL003_resp.yaml#/components/responses/403"
        404:
          $ref: "../../responses/SOL002SOL003_resp.yaml#/components/responses/404"
        405:
          $ref: "../../responses/SOL002SOL003_resp.yaml#/components/responses/405"
        406:
          $ref: "../../responses/SOL002SOL003_resp.yaml#/components/responses/406"
        422:
          $ref: "../../responses/SOL002SOL003_resp.yaml#/components/responses/422"
        500:
          $ref: "../../responses/SOL002SOL003_resp.yaml#/components/responses/500"
        503:
          $ref: "../../responses/SOL002SOL003_resp.yaml#/components/responses/503"
        504:
          $ref: "../../responses/SOL002SOL003_resp.yaml#/components/responses/504"

  ###############################################################################
  # VNF indicators related to a VNF instance                                    #
  ###############################################################################
  '/indicators/{vnfInstanceId}':
    #SOL003 location: 8.4.3
    parameters:
      - name: vnfInstanceId
        description: >
          Identifier of the VNF instance to which the VNF indicator applies.
          This identifier can be retrieved from the resource referenced by the
          "Location" HTTP header in the response to a POST request creating a
          new "Individual VNF instance" resource. It can also be retrieved from the "id"
          attribute in the payload body of that response.
        in: path
        type: string
        required: true
    get:
      description: >
        Get Indicator Value.
        The GET method queries multiple VNF indicators related to a VNF instance.
        This method shall follow the provisions specified in the tables 8.4.3.3.2-1 and 8.4.3.3.2-2
        for URI query parameters, request and response data structures, and response codes.
      parameters:
        - 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
        - name: filter
          description: >
            Attribute-based filtering expression according to clause 5.2 of ETSI GS NFV SOL 013.
            The VNFM shall support receiving this parameter as part of the 
            URI query string. The NFVO may supply this parameter. 
            All attribute names that appear in the VnfIndicator and in 
            data types referenced from it shall be supported by the VNFM 
            in the filter expression.
          in: query
          required: false
          type: string
        - name: nextpage_opaque_marker
          description: >
            Marker to obtain the next page of a paged response. Shall be 
            supported by the VNFM if the VNFM supports alternative 2 (paging) 
            according to clause 5.4.2.1 of ETSI GS NFV-SOL 013 for this resource.
          in: query
          required: false
          type: string
        - name: Version
          description: >
            Version of the API requested to use when responding to this request.
          in: header
          required: true
          type: string
      responses:
        200:
          description: >
            200 OK

            Shall be returned when information about zero or more VNF indicators has been queried successfully.
            The response body shall contain in an array the representations of all VNF indicators that are related
            to the particular VNF instance and that match the attribute filter, i.e. zero or more representations
            of VNF indicators as defined in clause 8.5.2.2.
            If the "filter" URI parameter was supplied in the request, the data in the response body shall have been
            transformed according to the rules specified in clause 5.2.2 of ETSI GS NFV-SOL 013.
            If the VNFM supports alternative 2 (paging) according to clause 5.4.2.1 of ETSI GS NFV-SOL 013
            for this resource, inclusion of the Link HTTP header in this response shall follow the provisions
            in clause 5.4.2.3 of ETSI GS NFV-SOL 013.
          headers:
            Content-Type:
              description: >
                The MIME type of the body of the request.
                Reference: IETF RFC 7231
              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
            Version:
              description: >
                Version of the API used in the response.
              type: string
              maximum: 1
              minimum: 1
            Link:
              description: >
                Reference to other resources. Used for paging in the present document, see clause 4.7.2.1.
              type: string
              maximum: 1
              minimum: 0
          schema:
            type: array
            items:
              $ref: "../../definitions/SOL002SOL003VNFIndicator_def.yaml#/definitions/VnfIndicator"
        400:
          $ref: "../../responses/SOL002SOL003_resp.yaml#/components/responses/400"
        401:
          $ref: "../../responses/SOL002SOL003_resp.yaml#/components/responses/401"
        403:
          $ref: "../../responses/SOL002SOL003_resp.yaml#/components/responses/403"
        404:
          $ref: "../../responses/SOL002SOL003_resp.yaml#/components/responses/404"
        405:
          $ref: "../../responses/SOL002SOL003_resp.yaml#/components/responses/405"
        406:
          $ref: "../../responses/SOL002SOL003_resp.yaml#/components/responses/406"
        422:
          $ref: "../../responses/SOL002SOL003_resp.yaml#/components/responses/422"
        500:
          $ref: "../../responses/SOL002SOL003_resp.yaml#/components/responses/500"
        503:
          $ref: "../../responses/SOL002SOL003_resp.yaml#/components/responses/503"
        504:
          $ref: "../../responses/SOL002SOL003_resp.yaml#/components/responses/504"

  ###############################################################################
  # Individual VNF indicator                                                    #
  ###############################################################################
  '/indicators/{vnfInstanceId}/{indicatorId}':
    #SOL003 location: 8.4.4
    parameters:
      - name: indicatorId
        description: >
          Identifier of the VNF indicator.
          This identifier can be retrieved from the resource referenced by the
          payload body in the response to a POST request creating a new "Individual VNF
          instance" resource.
        in: path
        type: string
        required: true
      - name: vnfInstanceId
        description: >
          Identifier of the VNF instance to which the VNF indicator applies.
          This identifier can be retrieved from the resource referenced by the
          "Location" HTTP header in the response to a POST request creating a
          new "Individual VNF instance" resource. It can also be retrieved from the "id"
          attribute in the payload body of that response.
        in: path
        type: string
        required: true
    get:
      description: >
        Get Indicator Value.
        The GET method reads a VNF indicator.
        This method shall follow the provisions specified in the tables 8.4.4.3.2-1 and 8.4.4.3.2-2
        for URI query parameters, request and response data structures, and response codes.
      parameters:
        - 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
        - name: Version
          description: >
            Version of the API requested to use when responding to this request.
          in: header
          required: true
          type: string
      responses:
        200:
          description: >
            200 OK
            Shall be returned when the VNF indicator has been read successfully.
            The response body shall contain the representation of the VNF indicator.
          headers:
            Content-Type:
              description: >
                The MIME type of the body of the request.
                Reference: IETF RFC 7231
              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
            Version:
              description: >
                Version of the API used in the response.
              type: string
              maximum: 1
              minimum: 1
          schema:
            $ref: "../../definitions/SOL002SOL003VNFIndicator_def.yaml#/definitions/VnfIndicator"
        400:
          $ref: "../../responses/SOL002SOL003_resp.yaml#/components/responses/400"
        401:
          $ref: "../../responses/SOL002SOL003_resp.yaml#/components/responses/401"
        403:
          $ref: "../../responses/SOL002SOL003_resp.yaml#/components/responses/403"
        404:
          $ref: "../../responses/SOL002SOL003_resp.yaml#/components/responses/404"
        405:
          $ref: "../../responses/SOL002SOL003_resp.yaml#/components/responses/405"
        406:
          $ref: "../../responses/SOL002SOL003_resp.yaml#/components/responses/406"
        422:
          $ref: "../../responses/SOL002SOL003_resp.yaml#/components/responses/422"
        500:
          $ref: "../../responses/SOL002SOL003_resp.yaml#/components/responses/500"
        503:
          $ref: "../../responses/SOL002SOL003_resp.yaml#/components/responses/503"
        504:
          $ref: "../../responses/SOL002SOL003_resp.yaml#/components/responses/504"

  ###############################################################################
  # Subscriptions                                                              #
  ###############################################################################
  '/subscriptions':
    post:
      description: >
        Subscribe.
        The POST method creates a new subscription.
        As the result of successfully executing this method, a new "Individual subscription" resource
        as defined in clause 8.4.6 shall have been created. This method shall not trigger any notification.
        Creation of two "Individual subscription" resources with the same callbackURI and the same filter
        can result in performance degradation and will provide duplicates of notifications to the NFVO,
        and might make sense only in very rare use cases. Consequently, the VNFM may either allow creating
        a new "Individual subscription" resource if another "Individual 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 "Individual subscription" resource (in which case it shall return
        a "303 See Other" response code referencing the existing "Individual subscription" resource with the same
        filter and callbackUri).
        This method shall follow the provisions specified in the tables 8.4.5.3.1-1 and 8.4.5.3.1-2
        for URI query parameters, request and response data structures, and response codes.
      parameters:
        - name: VnfIndicatorSubscriptionRequest
          description: Details of the subscription to be created.
          in: body
          required: true
          schema:
            $ref: "../../definitions/SOL002SOL003VNFIndicator_def.yaml#/definitions/VnfIndicatorSubscriptionRequest"
        - 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
        - name: Version
          description: >
            Version of the API requested to use when responding to this request.
          in: header
          required: true
          type: string
      responses:
        201:
          description: >
            201 CREATED

            Shall be returned when the subscription has been created successfully.
            The response body shall contain a representation of the created "Individual subscription" resource.
            The HTTP response shall include a "Location" HTTP header that points to the created 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
            Version:
              description: >
                Version of the API used in the response.
              type: string
              maximum: 1
              minimum: 1
          schema:
            type: array
            items:
              $ref: "../../definitions/SOL002SOL003VNFIndicator_def.yaml#/definitions/VnfIndicatorSubscription"
        303:
#          description: >
#            303 SEE OTHER
#
#            Shall be returned when 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 "Individual subscription" resource.
#            The response body shall be empty.
          $ref: "../../responses/SOL002SOL003_resp.yaml#/components/responses/303"
        400:
          $ref: "../../responses/SOL002SOL003_resp.yaml#/components/responses/400"
        401:
          $ref: "../../responses/SOL002SOL003_resp.yaml#/components/responses/401"
        403:
          $ref: "../../responses/SOL002SOL003_resp.yaml#/components/responses/403"
        404:
          $ref: "../../responses/SOL002SOL003_resp.yaml#/components/responses/404"
        405:
          $ref: "../../responses/SOL002SOL003_resp.yaml#/components/responses/405"
        406:
          $ref: "../../responses/SOL002SOL003_resp.yaml#/components/responses/406"
        422:
          $ref: "../../responses/SOL002SOL003_resp.yaml#/components/responses/422"
        500:
          $ref: "../../responses/SOL002SOL003_resp.yaml#/components/responses/500"
        503:
          $ref: "../../responses/SOL002SOL003_resp.yaml#/components/responses/503"
        504:
          $ref: "../../responses/SOL002SOL003_resp.yaml#/components/responses/504"

    get:
      description: >
        Query Subscription Information.
        The GET method queries the list of active subscriptions of the functional block that
        invokes the method. It can be used e.g. for resynchronization after error situations.
        This method shall follow the provisions specified in the tables 8.4.5.3.2-1 and 8.4.5.3.2-2
        for URI query parameters, request and response data structures, and response codes.
      parameters:
        - 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
        - name: filter
          description: >
            Attribute-based filtering expression according to clause 5.2 of ETSI GS NFV SOL 013.
            The VNFM shall support receiving this parameter as part of the 
            URI query string. The NFVO may supply this parameter. 
            All attribute names that appear in the VnfIndicatorSubscription
            and in data types referenced from it shall be supported by the 
            VNFM in the filter expression.
          in: query
          required: false
          type: string
        - name: nextpage_opaque_marker
          description: >
            Marker to obtain the next page of a paged response. Shall be 
            supported by the VNFM if the VNFM supports alternative 2 (paging) 
            according to clause 5.4.2.1 of ETSI GS NFV-SOL 013 for this resource.
          in: query
          required: false
          type: string
        - name: Version
          description: >
            Version of the API requested to use when responding to this request.
          in: header
          required: true
          type: string
      responses:
        200:
          description: >
            200 OK

            Shall be returned when the list of subscriptions has been queried successfully.
            The response body shall contain in an array the representations of all active
            subscriptions of the functional block that invokes the method which match the attribute filter,
            i.e. zero or more representations of VNF indicator subscriptions as defined in clause 8.5.2.4.
            If the "filter" URI parameter was supplied in the request, the data in the response body shall
            have been transformed according to the rules specified in clause 5.2.2 of ETSI GS NFV-SOL 013.
            If the VNFM supports alternative 2 (paging) according to clause 5.4.2.1 of ETSI GS NFV-SOL 013
            for this resource, inclusion of the Link HTTP header in this response shall follow the provisions
            in clause 5.4.2.3 of ETSI GS NFV-SOL 013.
          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
            Version:
              description: >
                Version of the API used in the response.
              type: string
              maximum: 1
              minimum: 1
            Link:
              description: >
                Reference to other resources. Used for paging in the present document, see clause 4.7.2.1.
              type: string
              maximum: 1
              minimum: 0
          schema:
            type: array
            items:
              $ref: "../../definitions/SOL002SOL003VNFIndicator_def.yaml#/definitions/VnfIndicatorSubscription"
        400:
          $ref: "../../responses/SOL002SOL003_resp.yaml#/components/responses/400"
        401:
          $ref: "../../responses/SOL002SOL003_resp.yaml#/components/responses/401"
        403:
          $ref: "../../responses/SOL002SOL003_resp.yaml#/components/responses/403"
        404:
          $ref: "../../responses/SOL002SOL003_resp.yaml#/components/responses/404"
        405:
          $ref: "../../responses/SOL002SOL003_resp.yaml#/components/responses/405"
        406:
          $ref: "../../responses/SOL002SOL003_resp.yaml#/components/responses/406"
        422:
          $ref: "../../responses/SOL002SOL003_resp.yaml#/components/responses/422"
        500:
          $ref: "../../responses/SOL002SOL003_resp.yaml#/components/responses/500"
        503:
          $ref: "../../responses/SOL002SOL003_resp.yaml#/components/responses/503"
        504:
          $ref: "../../responses/SOL002SOL003_resp.yaml#/components/responses/504"

  ###############################################################################
  # Individual subscription                                                     #
  ###############################################################################
  '/indicators/subscriptions/{subscriptionId}':
    #SOL003 location: 8.4.6
    parameters:
      - name: subscriptionId
        description: >
          Identifier of this subscription.
          This identifier can be retrieved from the resource referenced by the
          "Location" HTTP header in the response to a POST request creating a
          new "Individual subscription" resource. It can also be retrieved from the "id"
          attribute in the payload body of that response.
        in: path
        type: string
        required: true
    get:
      description: >
        Query Subscription Information.
        The GET method reads an individual subscription.
        This method shall follow the provisions specified in the tables 8.4.6.3.2-1 and 8.4.6.3.2-2
        for URI query parameters, request and response data structures, and response codes.
      parameters:
        - name: Accept
          description: >
            Content-Types that are acceptable for the response.
            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
        - name: Content-Type
          description: >
            The MIME type of the body of the request.
            Reference: IETF RFC 7231
          in: header
          required: true
          type: string
        - name: Version
          description: >
            Version of the API requested to use when responding to this request.
          in: header
          required: true
          type: string
      responses:
        200:
          description: >
            200 OK

            Shall be returned when information about an individual subscription has been read successfully.
            The response body shall contain a representation of the "Individual 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
            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
            Version:
              description: >
                Version of the API used in the response.
              type: string
              maximum: 1
              minimum: 1
          schema:
            $ref: "../../definitions/SOL002SOL003VNFIndicator_def.yaml#/definitions/VnfIndicatorSubscription"
        400:
          $ref: "../../responses/SOL002SOL003_resp.yaml#/components/responses/400"
        401:
          $ref: "../../responses/SOL002SOL003_resp.yaml#/components/responses/401"
        403:
          $ref: "../../responses/SOL002SOL003_resp.yaml#/components/responses/403"
        404:
          $ref: "../../responses/SOL002SOL003_resp.yaml#/components/responses/404"
        405:
          $ref: "../../responses/SOL002SOL003_resp.yaml#/components/responses/405"
        406:
          $ref: "../../responses/SOL002SOL003_resp.yaml#/components/responses/406"
        422:
          $ref: "../../responses/SOL002SOL003_resp.yaml#/components/responses/422"
        500:
          $ref: "../../responses/SOL002SOL003_resp.yaml#/components/responses/500"
        503:
          $ref: "../../responses/SOL002SOL003_resp.yaml#/components/responses/503"
        504:
          $ref: "../../responses/SOL002SOL003_resp.yaml#/components/responses/504"

    delete:
      description: >
        Terminate Subscription.
        The DELETE method terminates an individual subscription.
        This method shall follow the provisions specified in the tables 8.4.6.3.5-1 and 8.4.6.3.5-2
        for URI query parameters, request and response data structures, and response codes.
        As the result of successfully executing this method, the "Individual subscription" resource
        shall not exist any longer. This means that no notifications for that subscription shall be
        sent to the formerly-subscribed API consumer.

          NOTE: Due to race conditions, some notifications might still be received by the formerly-subscribed
                API consumer for a certain time period after the deletion.
      parameters:
        - name: Authorization
          description: >
            The authorization token for the request.
            Reference: IETF RFC 7235
          in: header
          required: false
          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: Version
          description: >
            Version of the API requested to use when responding to this request.
          in: header
          required: true
          type: string
      responses:
        204:
          description: >
            204 NO CONTENT

            Shall be returned when the "Individual subscription" resource has been 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
            Version:
              description: >
                Version of the API used in the response.
              type: string
              maximum: 1
              minimum: 1
        400:
          $ref: "../../responses/SOL002SOL003_resp.yaml#/components/responses/400"
        401:
          $ref: "../../responses/SOL002SOL003_resp.yaml#/components/responses/401"
        403:
          $ref: "../../responses/SOL002SOL003_resp.yaml#/components/responses/403"
        404:
          $ref: "../../responses/SOL002SOL003_resp.yaml#/components/responses/404"
        405:
          $ref: "../../responses/SOL002SOL003_resp.yaml#/components/responses/405"
        406:
          $ref: "../../responses/SOL002SOL003_resp.yaml#/components/responses/406"
        422:
          $ref: "../../responses/SOL002SOL003_resp.yaml#/components/responses/422"
        500:
          $ref: "../../responses/SOL002SOL003_resp.yaml#/components/responses/500"
        503:
          $ref: "../../responses/SOL002SOL003_resp.yaml#/components/responses/503"
        504:
          $ref: "../../responses/SOL002SOL003_resp.yaml#/components/responses/504"