openapi: 3.0.3
info:
  title: SAP BRIM (Billing and Revenue Innovation Management) SAP BRIM Convergent Charging Balances Subscriptions API
  description: API for real-time charging and rating of usage-based services within the SAP BRIM (Billing and Revenue Innovation Management) suite. Supports complex pricing models, prepaid and postpaid scenarios, tiered and volume-based pricing, and real-time balance management.
  version: 1.0.0
  contact:
    name: SAP Support
    email: support@sap.com
    url: https://support.sap.com
  license:
    name: SAP Developer License
    url: https://www.sap.com/about/legal/terms-of-use.html
  termsOfService: https://www.sap.com/about/legal/terms-of-use.html
servers:
- url: https://api.sap.com/convergent-charging/v1
  description: SAP API Business Hub - Production
- url: https://sandbox.api.sap.com/convergent-charging/v1
  description: SAP API Business Hub - Sandbox
security:
- OAuth2:
  - read
  - write
- ApiKeyAuth: []
tags:
- name: Subscriptions
  description: Subscription lifecycle management operations
paths:
  /subscriptions:
    get:
      operationId: listSubscriptions
      summary: SAP BRIM (Billing and Revenue Innovation Management) List subscriptions
      description: Retrieves a paginated list of subscriptions. Supports filtering by customer, status, plan, and date range.
      tags:
      - Subscriptions
      parameters:
      - $ref: '#/components/parameters/Offset'
      - $ref: '#/components/parameters/Limit'
      - name: customerId
        in: query
        description: Filter by customer identifier
        schema:
          type: string
      - name: status
        in: query
        description: Filter by subscription status
        schema:
          type: string
          enum:
          - ACTIVE
          - SUSPENDED
          - CANCELLED
          - EXPIRED
          - PENDING
          - TRIAL
      - name: planId
        in: query
        description: Filter by subscription plan
        schema:
          type: string
      - name: createdFrom
        in: query
        schema:
          type: string
          format: date
      - name: createdTo
        in: query
        schema:
          type: string
          format: date
      responses:
        '200':
          description: List of subscriptions
          content:
            application/json:
              schema:
                type: object
                properties:
                  results:
                    type: array
                    items:
                      $ref: '#/components/schemas/Subscription'
                  totalCount:
                    type: integer
                  offset:
                    type: integer
                  limit:
                    type: integer
        '401':
          $ref: '#/components/responses/Unauthorized'
        '500':
          $ref: '#/components/responses/InternalServerError'
    post:
      operationId: createSubscription
      summary: SAP BRIM (Billing and Revenue Innovation Management) Create a subscription
      description: Creates a new subscription for a customer. Associates the subscription with a plan, sets the billing frequency, and initializes the subscription lifecycle.
      tags:
      - Subscriptions
      requestBody:
        required: true
        content:
          application/json:
            schema:
              $ref: '#/components/schemas/SubscriptionCreate'
      responses:
        '201':
          description: Subscription created
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Subscription'
        '400':
          $ref: '#/components/responses/BadRequest'
        '401':
          $ref: '#/components/responses/Unauthorized'
        '409':
          description: Conflict with existing subscription
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/ErrorResponse'
        '500':
          $ref: '#/components/responses/InternalServerError'
  /subscriptions/{subscriptionId}:
    get:
      operationId: getSubscription
      summary: SAP BRIM (Billing and Revenue Innovation Management) Get a subscription
      description: Retrieves detailed information about a specific subscription, including its items, billing history, and current status.
      tags:
      - Subscriptions
      parameters:
      - $ref: '#/components/parameters/SubscriptionId'
      responses:
        '200':
          description: Subscription details
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Subscription'
        '401':
          $ref: '#/components/responses/Unauthorized'
        '404':
          $ref: '#/components/responses/NotFound'
        '500':
          $ref: '#/components/responses/InternalServerError'
    patch:
      operationId: updateSubscription
      summary: SAP BRIM (Billing and Revenue Innovation Management) Update a subscription
      description: Updates an existing subscription. Supports modifying billing details, metadata, and other configurable attributes. Plan changes should use the dedicated change-plan endpoint.
      tags:
      - Subscriptions
      parameters:
      - $ref: '#/components/parameters/SubscriptionId'
      requestBody:
        required: true
        content:
          application/json:
            schema:
              $ref: '#/components/schemas/SubscriptionUpdate'
      responses:
        '200':
          description: Subscription updated
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Subscription'
        '400':
          $ref: '#/components/responses/BadRequest'
        '401':
          $ref: '#/components/responses/Unauthorized'
        '404':
          $ref: '#/components/responses/NotFound'
        '500':
          $ref: '#/components/responses/InternalServerError'
    delete:
      operationId: deleteSubscription
      summary: SAP BRIM (Billing and Revenue Innovation Management) Delete a subscription
      description: Permanently removes a subscription. Only PENDING or CANCELLED subscriptions can be deleted. Active subscriptions must be cancelled first.
      tags:
      - Subscriptions
      parameters:
      - $ref: '#/components/parameters/SubscriptionId'
      responses:
        '204':
          description: Subscription deleted
        '400':
          $ref: '#/components/responses/BadRequest'
        '401':
          $ref: '#/components/responses/Unauthorized'
        '404':
          $ref: '#/components/responses/NotFound'
        '500':
          $ref: '#/components/responses/InternalServerError'
  /subscriptions/{subscriptionId}/activate:
    post:
      operationId: activateSubscription
      summary: SAP BRIM (Billing and Revenue Innovation Management) Activate a subscription
      description: Activates a PENDING or SUSPENDED subscription, starting or resuming the billing cycle.
      tags:
      - Subscriptions
      parameters:
      - $ref: '#/components/parameters/SubscriptionId'
      requestBody:
        required: false
        content:
          application/json:
            schema:
              type: object
              properties:
                effectiveDate:
                  type: string
                  format: date
                  description: Date when activation takes effect (defaults to today)
      responses:
        '200':
          description: Subscription activated
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Subscription'
        '400':
          $ref: '#/components/responses/BadRequest'
        '404':
          $ref: '#/components/responses/NotFound'
        '500':
          $ref: '#/components/responses/InternalServerError'
  /subscriptions/{subscriptionId}/suspend:
    post:
      operationId: suspendSubscription
      summary: SAP BRIM (Billing and Revenue Innovation Management) Suspend a subscription
      description: Temporarily suspends an active subscription. Billing is paused during the suspension period. The subscription can be reactivated later.
      tags:
      - Subscriptions
      parameters:
      - $ref: '#/components/parameters/SubscriptionId'
      requestBody:
        required: true
        content:
          application/json:
            schema:
              type: object
              required:
              - reason
              properties:
                reason:
                  type: string
                  description: Reason for suspension
                effectiveDate:
                  type: string
                  format: date
                resumeDate:
                  type: string
                  format: date
                  description: Scheduled date to automatically resume
      responses:
        '200':
          description: Subscription suspended
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Subscription'
        '400':
          $ref: '#/components/responses/BadRequest'
        '404':
          $ref: '#/components/responses/NotFound'
        '500':
          $ref: '#/components/responses/InternalServerError'
  /subscriptions/{subscriptionId}/cancel:
    post:
      operationId: cancelSubscription
      summary: SAP BRIM (Billing and Revenue Innovation Management) Cancel a subscription
      description: Cancels an active or suspended subscription. Supports immediate cancellation or end-of-term cancellation.
      tags:
      - Subscriptions
      parameters:
      - $ref: '#/components/parameters/SubscriptionId'
      requestBody:
        required: true
        content:
          application/json:
            schema:
              type: object
              required:
              - reason
              - cancellationType
              properties:
                reason:
                  type: string
                cancellationType:
                  type: string
                  enum:
                  - IMMEDIATE
                  - END_OF_TERM
                  - SPECIFIC_DATE
                  description: When the cancellation takes effect
                effectiveDate:
                  type: string
                  format: date
                  description: Required when cancellationType is SPECIFIC_DATE
                refundPolicy:
                  type: string
                  enum:
                  - NO_REFUND
                  - PRORATED
                  - FULL
      responses:
        '200':
          description: Subscription cancelled
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Subscription'
        '400':
          $ref: '#/components/responses/BadRequest'
        '404':
          $ref: '#/components/responses/NotFound'
        '500':
          $ref: '#/components/responses/InternalServerError'
  /subscriptions/{subscriptionId}/renew:
    post:
      operationId: renewSubscription
      summary: SAP BRIM (Billing and Revenue Innovation Management) Renew a subscription
      description: Manually triggers the renewal of a subscription. Useful for subscriptions that do not auto-renew or for early renewal requests.
      tags:
      - Subscriptions
      parameters:
      - $ref: '#/components/parameters/SubscriptionId'
      requestBody:
        required: false
        content:
          application/json:
            schema:
              type: object
              properties:
                renewalTerm:
                  type: integer
                  description: Number of billing periods for the renewal
                renewalPlanId:
                  type: string
                  description: Optional new plan for the renewal period
      responses:
        '200':
          description: Subscription renewed
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Subscription'
        '400':
          $ref: '#/components/responses/BadRequest'
        '404':
          $ref: '#/components/responses/NotFound'
        '500':
          $ref: '#/components/responses/InternalServerError'
  /subscriptions/{subscriptionId}/change-plan:
    post:
      operationId: changeSubscriptionPlan
      summary: SAP BRIM (Billing and Revenue Innovation Management) Change subscription plan
      description: Changes the plan associated with a subscription. Handles prorating, upgrade/downgrade logic, and billing adjustments automatically.
      tags:
      - Subscriptions
      parameters:
      - $ref: '#/components/parameters/SubscriptionId'
      requestBody:
        required: true
        content:
          application/json:
            schema:
              type: object
              required:
              - newPlanId
              properties:
                newPlanId:
                  type: string
                effectiveDate:
                  type: string
                  format: date
                prorateCharges:
                  type: boolean
                  default: true
                  description: Whether to prorate charges for the current period
      responses:
        '200':
          description: Plan changed successfully
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Subscription'
        '400':
          $ref: '#/components/responses/BadRequest'
        '404':
          $ref: '#/components/responses/NotFound'
        '500':
          $ref: '#/components/responses/InternalServerError'
components:
  responses:
    InternalServerError:
      description: Internal server error
      content:
        application/json:
          schema:
            $ref: '#/components/schemas/ErrorResponse'
    BadRequest:
      description: Invalid request parameters
      content:
        application/json:
          schema:
            $ref: '#/components/schemas/ErrorResponse'
    Unauthorized:
      description: Authentication required or invalid credentials
      content:
        application/json:
          schema:
            $ref: '#/components/schemas/ErrorResponse'
    NotFound:
      description: Resource not found
      content:
        application/json:
          schema:
            $ref: '#/components/schemas/ErrorResponse'
  schemas:
    SubscriptionCreate:
      type: object
      required:
      - customerId
      - planId
      properties:
        customerId:
          type: string
        planId:
          type: string
        billingFrequency:
          type: string
          enum:
          - MONTHLY
          - QUARTERLY
          - SEMI_ANNUAL
          - ANNUAL
          - CUSTOM
        startDate:
          type: string
          format: date
          description: Defaults to today if not specified
        endDate:
          type: string
          format: date
        trialPeriodDays:
          type: integer
          minimum: 0
          description: Number of trial days before billing begins
        autoRenew:
          type: boolean
          default: true
        quantity:
          type: integer
          minimum: 1
          default: 1
        paymentMethod:
          type: string
        couponCode:
          type: string
          description: Promotional coupon to apply
        metadata:
          type: object
          additionalProperties:
            type: string
    MonetaryAmount:
      type: object
      required:
      - value
      - currency
      properties:
        value:
          type: number
          format: double
        currency:
          type: string
          pattern: ^[A-Z]{3}$
          description: ISO 4217 currency code
    Subscription:
      type: object
      properties:
        subscriptionId:
          type: string
          format: uuid
        customerId:
          type: string
        planId:
          type: string
        planName:
          type: string
        status:
          type: string
          enum:
          - ACTIVE
          - SUSPENDED
          - CANCELLED
          - EXPIRED
          - PENDING
          - TRIAL
        billingFrequency:
          type: string
          enum:
          - MONTHLY
          - QUARTERLY
          - SEMI_ANNUAL
          - ANNUAL
          - CUSTOM
        startDate:
          type: string
          format: date
        endDate:
          type: string
          format: date
        trialEndDate:
          type: string
          format: date
        currentPeriodStart:
          type: string
          format: date
        currentPeriodEnd:
          type: string
          format: date
        nextBillingDate:
          type: string
          format: date
        autoRenew:
          type: boolean
        renewalCount:
          type: integer
          description: Number of times this subscription has been renewed
        cancellationDate:
          type: string
          format: date
        cancellationReason:
          type: string
        recurringCharge:
          $ref: '#/components/schemas/MonetaryAmount'
        items:
          type: array
          items:
            $ref: '#/components/schemas/SubscriptionItem'
        paymentMethod:
          type: string
          description: Identifier of the payment method on file
        metadata:
          type: object
          additionalProperties:
            type: string
        createdAt:
          type: string
          format: date-time
        modifiedAt:
          type: string
          format: date-time
    ErrorResponse:
      type: object
      properties:
        error:
          type: object
          properties:
            code:
              type: string
            message:
              type: string
            target:
              type: string
            details:
              type: array
              items:
                type: object
                properties:
                  code:
                    type: string
                  message:
                    type: string
    SubscriptionUpdate:
      type: object
      properties:
        autoRenew:
          type: boolean
        paymentMethod:
          type: string
        endDate:
          type: string
          format: date
        metadata:
          type: object
          additionalProperties:
            type: string
    SubscriptionItem:
      type: object
      properties:
        itemId:
          type: string
        productId:
          type: string
        productName:
          type: string
        description:
          type: string
        quantity:
          type: integer
          minimum: 1
        unitPrice:
          $ref: '#/components/schemas/MonetaryAmount'
        totalPrice:
          $ref: '#/components/schemas/MonetaryAmount'
        billingType:
          type: string
          enum:
          - RECURRING
          - ONE_TIME
          - USAGE_BASED
        includedUnits:
          type: integer
          description: Number of units included in the base price
        overageRate:
          type: number
          format: double
          description: Rate per unit above the included quantity
        metadata:
          type: object
          additionalProperties:
            type: string
  parameters:
    SubscriptionId:
      name: subscriptionId
      in: path
      required: true
      description: Unique identifier of the subscription
      schema:
        type: string
        format: uuid
    Limit:
      name: limit
      in: query
      description: Maximum number of items to return
      schema:
        type: integer
        default: 20
        minimum: 1
        maximum: 100
    Offset:
      name: offset
      in: query
      description: Number of items to skip for pagination
      schema:
        type: integer
        default: 0
        minimum: 0
  securitySchemes:
    OAuth2:
      type: oauth2
      flows:
        clientCredentials:
          tokenUrl: https://auth.sap.com/oauth/token
          scopes:
            read: Read access to charging and rating resources
            write: Write access to charging and rating resources
    ApiKeyAuth:
      type: apiKey
      in: header
      name: APIKey