openapi: 3.0.0

info:
  title: ECS EES Registration_API
  description: |
    API for EES Registration.  
    © 2026, 3GPP Organizational Partners (ARIB, ATIS, CCSA, ETSI, TSDSI, TTA, TTC).  
    All rights reserved.
  version: 1.2.1

externalDocs:
  description: >
    3GPP TS 29.558 V19.7.0 Enabling Edge Applications;
    Application Programming Interface (API) specification; Stage 3
  url: https://www.3gpp.org/ftp/Specs/archive/29_series/29.558/

security:
  - {}
  - oAuth2ClientCredentials: []

servers:
  - url: '{apiRoot}/eecs-eesregistration/v1'
    variables:
      apiRoot:
        default: https://example.com
        description: apiRoot as defined in clause 7.5 of 3GPP TS 29.558.

paths:
  /registrations:
    post:
      summary: Create a new EES Registration
      operationId: CreateEESRegistration
      tags:
        - EES Registrations (Collection)
      description: Registers a new EES at the Edge Configuration Server.
      requestBody:
        required: true
        content:
          application/json:
            schema:
              $ref: '#/components/schemas/EESRegistration'
      responses:
        '201':
          description: EES information is registered successfully at ECS.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/EESRegistration'
          headers:
            Location:
              description: 'Contains the URI of the newly created resource'
              required: true
              schema:
                type: string
        '400':
          $ref: 'TS29122_CommonData.yaml#/components/responses/400'
        '401':
          $ref: 'TS29122_CommonData.yaml#/components/responses/401'
        '403':
          $ref: 'TS29122_CommonData.yaml#/components/responses/403'
        '404':
          $ref: 'TS29122_CommonData.yaml#/components/responses/404'
        '411':
          $ref: 'TS29122_CommonData.yaml#/components/responses/411'
        '413':
          $ref: 'TS29122_CommonData.yaml#/components/responses/413'
        '415':
          $ref: 'TS29122_CommonData.yaml#/components/responses/415'
        '429':
          $ref: 'TS29122_CommonData.yaml#/components/responses/429'
        '500':
          $ref: 'TS29122_CommonData.yaml#/components/responses/500'
        '503':
          $ref: 'TS29122_CommonData.yaml#/components/responses/503'
        default:
          $ref: 'TS29122_CommonData.yaml#/components/responses/default'

  /registrations/{registrationId}:
    get:
      summary: Get an Individual EES Registration
      operationId: GetIndEESReg
      tags:
        - Individual EES Registration (Document)
      description: Retrieve an Individual EES registration resource.
      parameters:
        - name: registrationId
          in: path
          description: Registration Id.
          required: true
          schema:
            type: string
      responses:
        '200':
          description: OK (The EES registration information at the Edge Configuration Server).
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/EESRegistration'
        '307':
          $ref: 'TS29122_CommonData.yaml#/components/responses/307'
        '308':
          $ref: 'TS29122_CommonData.yaml#/components/responses/308'
        '400':
          $ref: 'TS29122_CommonData.yaml#/components/responses/400'
        '401':
          $ref: 'TS29122_CommonData.yaml#/components/responses/401'
        '403':
          $ref: 'TS29122_CommonData.yaml#/components/responses/403'
        '404':
          $ref: 'TS29122_CommonData.yaml#/components/responses/404'
        '406':
          $ref: 'TS29122_CommonData.yaml#/components/responses/406'
        '429':
          $ref: 'TS29122_CommonData.yaml#/components/responses/429'
        '500':
          $ref: 'TS29122_CommonData.yaml#/components/responses/500'
        '503':
          $ref: 'TS29122_CommonData.yaml#/components/responses/503'
        default:
          $ref: 'TS29122_CommonData.yaml#/components/responses/default'
    put:
      summary: Update an Individual EES Registration
      operationId: UpdateIndEESReg
      tags:
        - Individual EES Registration (Document)
      description: Fully replace an existing EES Registration resource.
      parameters:
        - name: registrationId
          in: path
          description: EES Registration Id.
          required: true
          schema:
            type: string
      requestBody:
        required: true
        content:
          application/json:
            schema:
              $ref: '#/components/schemas/EESRegistration'
      responses:
        '200':
          description: OK (The EES registration information is updated successfully).
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/EESRegistration'
        '204':
          description: >
            No Content. The individual EES registration information is updated successfully.
        '307':
          $ref: 'TS29122_CommonData.yaml#/components/responses/307'
        '308':
          $ref: 'TS29122_CommonData.yaml#/components/responses/308'
        '400':
          $ref: 'TS29122_CommonData.yaml#/components/responses/400'
        '401':
          $ref: 'TS29122_CommonData.yaml#/components/responses/401'
        '403':
          $ref: 'TS29122_CommonData.yaml#/components/responses/403'
        '404':
          $ref: 'TS29122_CommonData.yaml#/components/responses/404'
        '411':
          $ref: 'TS29122_CommonData.yaml#/components/responses/411'
        '413':
          $ref: 'TS29122_CommonData.yaml#/components/responses/413'
        '415':
          $ref: 'TS29122_CommonData.yaml#/components/responses/415'
        '429':
          $ref: 'TS29122_CommonData.yaml#/components/responses/429'
        '500':
          $ref: 'TS29122_CommonData.yaml#/components/responses/500'
        '503':
          $ref: 'TS29122_CommonData.yaml#/components/responses/503'
        default:
          $ref: 'TS29122_CommonData.yaml#/components/responses/default'
    patch:
      summary: Modify an Individual EES Registration
      operationId: ModifyIndEESReg
      tags:
        - Individual EES Registration (Document)
      description: Partially update an existing EES Registration resource.
      parameters:
        - name: registrationId
          in: path
          description: EES registration Id.
          required: true
          schema:
            type: string
      requestBody:
        description: Partial update an existing EES registration resource.
        required: true
        content:
          application/merge-patch+json:
            schema:
              $ref: '#/components/schemas/EESRegistrationPatch'
      responses:
        '200':
          description: >
            The Individual EES registration is successfully modified and
            the updated registration information is returned in the response.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/EESRegistration'
        '204':
          description: >
            No Content. The individual EES registration information is updated successfully.
        '307':
          $ref: 'TS29122_CommonData.yaml#/components/responses/307'
        '308':
          $ref: 'TS29122_CommonData.yaml#/components/responses/308'
        '400':
          $ref: 'TS29122_CommonData.yaml#/components/responses/400'
        '401':
          $ref: 'TS29122_CommonData.yaml#/components/responses/401'
        '403':
          $ref: 'TS29122_CommonData.yaml#/components/responses/403'
        '404':
          $ref: 'TS29122_CommonData.yaml#/components/responses/404'
        '411':
          $ref: 'TS29122_CommonData.yaml#/components/responses/411'
        '413':
          $ref: 'TS29122_CommonData.yaml#/components/responses/413'
        '415':
          $ref: 'TS29122_CommonData.yaml#/components/responses/415'
        '429':
          $ref: 'TS29122_CommonData.yaml#/components/responses/429'
        '500':
          $ref: 'TS29122_CommonData.yaml#/components/responses/500'
        '503':
          $ref: 'TS29122_CommonData.yaml#/components/responses/503'
        default:
          $ref: 'TS29122_CommonData.yaml#/components/responses/default'
    delete:
      summary: Delete an Individual EES Registration
      operationId: DeleteIndEESReg
      tags:
        - Individual EES Registration (Document)
      description: Delete an existing EES registration at ECS.
      parameters:
        - name: registrationId
          in: path
          description: Registration Id.
          required: true
          schema:
            type: string
      responses:
        '204':
          description: The individual EES registration is deleted.
        '307':
          $ref: 'TS29122_CommonData.yaml#/components/responses/307'
        '308':
          $ref: 'TS29122_CommonData.yaml#/components/responses/308'
        '400':
          $ref: 'TS29122_CommonData.yaml#/components/responses/400'
        '401':
          $ref: 'TS29122_CommonData.yaml#/components/responses/401'
        '403':
          $ref: 'TS29122_CommonData.yaml#/components/responses/403'
        '404':
          $ref: 'TS29122_CommonData.yaml#/components/responses/404'
        '429':
          $ref: 'TS29122_CommonData.yaml#/components/responses/429'
        '500':
          $ref: 'TS29122_CommonData.yaml#/components/responses/500'
        '503':
          $ref: 'TS29122_CommonData.yaml#/components/responses/503'
        default:
          $ref: 'TS29122_CommonData.yaml#/components/responses/default'

components:
  securitySchemes:
    oAuth2ClientCredentials:
      type: oauth2
      flows:
        clientCredentials:
          tokenUrl: '{tokenUrl}'
          scopes: {}

  schemas:
    EESRegistration:
      type: object
      description: Represents an EES registration information.
      properties:
        eesProf:
          $ref: '#/components/schemas/EESProfile'
        expTime:
          $ref: 'TS29122_CommonData.yaml#/components/schemas/DateTime'
        suppFeat:
          $ref: 'TS29571_CommonData.yaml#/components/schemas/SupportedFeatures'
      required:
        - eesProf

    EESProfile:
      type: object
      description: Represents the EES profile information.
      properties:
        eesId:
          type: string
          description: Identifier of the EES.
        endPt:
          $ref: 'TS29558_Eees_EASRegistration.yaml#/components/schemas/EndPoint'
        easIds:
          type: array
          items:
            type: string
          minItems: 1
          description: Application identifiers of EASs that are registered with EES.
        easBdlInfos:
          type: object
          additionalProperties:
            type: array
            items:
              $ref: 'TS29558_Eees_EASRegistration.yaml#/components/schemas/EASBundleInfo'
            minItems: 1
          minProperties: 1
          description: >
            The key used in this map for each entry is the EAS ID of the concerned EAS.
            Within each EASBundleInfo encoded map entry of this attribute, the "mainEasId" attribute
            shall not be present.
        allowedMNOsInfo:
          type: object
          additionalProperties:
            type: array
            items:
              $ref: 'TS29571_CommonData.yaml#/components/schemas/PlmnIdNid'
            minItems: 1
          minProperties: 1
          description: >
            The key of the map shall be the identifier of the EAS to which the provided allowed MNO
            information within the map value corresponds.
        ednInfoSets:
          $ref: '#/components/schemas/EDNInfo'
        easInstInfo:
          type: object
          additionalProperties:
            $ref: '#/components/schemas/EASInstantiationInfo'
          minProperties: 1
          description: >
             Represents the EAS instantiation information for the EAS(s) registered at the EES.
             The key of the map shall be the EAS ID to which the provided instantiation information
             within the map value relates.
        provId:
          type: string
          description: Identifier of the ECSP that provides the EES provider.
        svcArea:
          $ref: '#/components/schemas/ServiceArea'
        appLocs:
          type: array
          items:
            $ref: 'TS29571_CommonData.yaml#/components/schemas/Dnai'
          minItems: 1
          description: List of DNAI(s) associated with the EES.
        svcContSupp:
          type: array
          items:
            $ref: '#/components/schemas/ACRScenario'
          minItems: 1
          description: The ACR scenarios supported by the EES for service continuity.
        svcContSuppExt1:
          type: array
          items:
            $ref: 'TS29558_Eees_EASRegistration.yaml#/components/schemas/EASBundleInfo'
          minItems: 1
          description: >
            Represents the information related to the EES ability to handle bundled EAS coordinated
            ACRs.
            This attribute may be present only when the "svcContSupp" attribute is also present.
            When this attribute is present, it indicates that the EES (identified by the "eesId"
            attribute) is able to handle bundled EAS coordinated ACRs and contains the information
            of the EAS bundle(s) for which the EES is able to handle bundled EAS coordinated ACRs.
        eecRegConf:
          type: boolean
          description: >
            Set to true if the EEC is required to register to the EES to use edge service.
            Set to false if the EEC is not required to register to use edge services.
        ueServingSat:
          $ref: '#/components/schemas/UeServSatInfo'
        easLoadInfoList:
          type: object
          additionalProperties:
            $ref: '#/components/schemas/LoadInfo'
          minProperties: 1
          description: >
            Represents the load information for each EAS identified by the "easIds" attribute.
            The key of the map shall be set to the identifier of the EAS (among the ones provided
            within the "easIds" attribute) for which the load info provided within the map value
            corresponds.
      required:
        - eesId
        - endPt
        - eecRegConf

    EESRegistrationPatch:
      type: object
      description: Represents partial update request of individual EES registration information.
      properties:
        eesProf:
          $ref: '#/components/schemas/EESProfile'
        expTime:
          $ref: 'TS29571_CommonData.yaml#/components/schemas/DateTimeRm'

    ServiceArea:
      type: object
      description: Represents a service area information of the EdgeApp entity.
      properties:
        topServAr:
          $ref: '#/components/schemas/TopologicalServiceArea'
        geoServAr:
          $ref: '#/components/schemas/GeographicalServiceArea'

    TopologicalServiceArea:
      type: object
      description: Represents topological service area information.
      properties:
        ecgis:
          type: array
          items:
            $ref: 'TS29571_CommonData.yaml#/components/schemas/Ecgi'
          minItems: 1
          description: A list of E-UTRA cell identities.
        ncgis:
          type: array
          items:
            $ref: 'TS29571_CommonData.yaml#/components/schemas/Ncgi'
          minItems: 1
          description: A list of NR cell identities.
        tais:
          type: array
          items:
            $ref: 'TS29571_CommonData.yaml#/components/schemas/Tai'
          minItems: 1
          description: A list of tracking area identities.
        plmnIds:
          type: array
          items:
            $ref: 'TS29571_CommonData.yaml#/components/schemas/PlmnIdNid'
          minItems: 1
          description: A list of serving network identities.

    GeographicalServiceArea:
      type: object
      description: Represents geographical service area information.
      properties:
        geoArs:
          type: array
          items:
            $ref: 'TS29572_Nlmf_Location.yaml#/components/schemas/GeographicArea'
          minItems: 1
          description: A list of geographic area information.
        civicAddrs:
          type: array
          items:
            $ref: 'TS29572_Nlmf_Location.yaml#/components/schemas/CivicAddress'
          minItems: 1
          description: A list of civic address information.

    EASInstantiationInfo:
      type: object
      description: Represents the EAS instantiation information.
      properties:
        easId:
          type: string
          description: Identifier of the EAS.
        status:
          $ref: '#/components/schemas/InstantiationStatus'
        instCrit:
          $ref: '#/components/schemas/InstantiationCriteria'
      required:
        - easId
        - status

    InstantiationCriteria:
      type: object
      description: Represents the instantiation criteria for an EAS.
      properties:
        instantiationTime:
          $ref: 'TS29122_CommonData.yaml#/components/schemas/DateTime'
        instWindows:
          type: array
          items:
            $ref: 'TS29122_CommonData.yaml#/components/schemas/TimeWindow'
          minItems: 1
          description: A list time windows at which the EAS is instantiated.
        scheds:
          type: array
          items:
            $ref: 'TS29122_CpProvisioning.yaml#/components/schemas/ScheduledCommunicationTime'
          minItems: 1
          description: Represents the EAS instantiation schedule.
      oneOf:
        - required: [instantiationTime]
        - required: [instWindows]
        - required: [scheds]

    EDNInfo:
      type: object
      description: Represents EDN related information.
      properties:
        dnn:
          $ref: 'TS29571_CommonData.yaml#/components/schemas/Dnn'
        dnais:
          type: array
          items:
            $ref: 'TS29571_CommonData.yaml#/components/schemas/Dnai'
          minItems: 1
      required:
        - dnn

    LoadInfo:
      type: object
      description: Represents the load information of an EEL entity.
      properties:
        loadLevel:
          type: integer
          minimum: 0
          maximum: 100
        loadWarningStat:
          type: boolean
          description: >
            true indicates that load warning is activated.
            false indicates that load warning is not activated.
            The default value is "false" when this attribute is omitted.

    UeServSatInfo:
      type: object
      description: Represents the EDN related information for the satellite.
      properties:
        dynServAreaInd:
          type: boolean
          description: >
            Indicates whether the EES service area is mobile or not.
            true indicates that the EES service area is mobile (e.g., case of a MEO or LEO
            satellite).
            false indicates that the EES service area is not mobile (e.g., case of a GEO
            satellite).
            The default value is "false" when this attribute is omitted.
        satId:
          type: string
        trajId:
          type: string
        ascaiInfo:
          $ref: '#/components/schemas/AppSatCovAvailInfo'
      required:
        - satId

    AppSatCovAvailInfo:
      type: object
      description: Represents the Application Satellite Coverage Availability Information data.
      properties:
        covAvailInfo:
          $ref: 'TS29549_SS_ASCAIInfoRetrieval.yaml#/components/schemas/AscaiInfo'
      required:
        - covAvailInfo


    ACRScenario:
      anyOf:
      - type: string
        enum:
          - EEC_INITIATED
          - EEC_EXECUTED_VIA_SOURCE_EES
          - EEC_EXECUTED_VIA_TARGET_EES
          - SOURCE_EAS_DECIDED
          - SOURCE_EES_EXECUTED
          - EEL_MANAGED_ACR
      - type: string
        description: >
          This string provides forward-compatibility with future
          extensions to the enumeration but is not used to encode
          content defined in the present version of this API.
      description: |
        Represents the ACR scenarios supported by EES.  
        Possible values are:
        - EEC_INITIATED: Represents the EEC initiated ACR scenario.
        - EEC_EXECUTED_VIA_SOURCE_EES: Represents the EEC ACR scenario executed via the S-EES.
        - EEC_EXECUTED_VIA_TARGET_EES: Represents the EEC ACR scenario executed via the T-EES.
        - SOURCE_EAS_DECIDED: Represents the EEC ACR scenario where the S-EAS decides to perform
          ACR.
        - SOURCE_EES_EXECUTED: Represents the EEC ACR scenario where S-EES executes the ACR.
        - EEL_MANAGED_ACR: Represents the EEC ACR scenario where the ACR is managed by the
          Edge Enabler Layer.

    InstantiationStatus:
      anyOf:
      - type: string
        enum:
          - INSTANTIATED
          - INSTANTIABLE
      - type: string
        description: >
          This string provides forward-compatibility with future
          extensions to the enumeration but is not used to encode
          content defined in the present version of this API.
      description: |
        Represents the instantiation status information of an EAS.  
        Possible values are:
        - INSTANTIATED: Indicates that the EAS status is instantiated.
        - INSTANTIABLE: Indicates that the EAS status is instantiable but not yet instantiated.
