openapi: 3.0.3
info:
  title: SAP BRIM (Billing and Revenue Innovation Management) SAP BRIM Convergent Charging Balances Customers 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: Customers
  description: Customer account management for subscriptions
paths:
  /customers/{customerId}/subscriptions:
    get:
      operationId: listCustomerSubscriptions
      summary: SAP BRIM (Billing and Revenue Innovation Management) List subscriptions for a customer
      description: Retrieves all subscriptions belonging to a specific customer.
      tags:
      - Customers
      parameters:
      - $ref: '#/components/parameters/CustomerId'
      - $ref: '#/components/parameters/Offset'
      - $ref: '#/components/parameters/Limit'
      - name: status
        in: query
        schema:
          type: string
          enum:
          - ACTIVE
          - SUSPENDED
          - CANCELLED
          - EXPIRED
          - PENDING
          - TRIAL
      responses:
        '200':
          description: List of customer subscriptions
          content:
            application/json:
              schema:
                type: object
                properties:
                  results:
                    type: array
                    items:
                      $ref: '#/components/schemas/Subscription'
                  totalCount:
                    type: integer
        '401':
          $ref: '#/components/responses/Unauthorized'
        '404':
          $ref: '#/components/responses/NotFound'
        '500':
          $ref: '#/components/responses/InternalServerError'
  /customers/{customerId}/billing-summary:
    get:
      operationId: getCustomerBillingSummary
      summary: SAP BRIM (Billing and Revenue Innovation Management) Get billing summary for a customer
      description: Retrieves a billing summary across all of a customer's subscriptions, including outstanding amounts, next billing dates, and payment status.
      tags:
      - Customers
      parameters:
      - $ref: '#/components/parameters/CustomerId'
      responses:
        '200':
          description: Customer billing summary
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/CustomerBillingSummary'
        '404':
          $ref: '#/components/responses/NotFound'
        '500':
          $ref: '#/components/responses/InternalServerError'
components:
  schemas:
    CustomerBillingSummary:
      type: object
      properties:
        customerId:
          type: string
        activeSubscriptions:
          type: integer
        totalRecurringCharge:
          $ref: '#/components/schemas/MonetaryAmount'
        outstandingBalance:
          $ref: '#/components/schemas/MonetaryAmount'
        nextBillingDate:
          type: string
          format: date
        nextBillingAmount:
          $ref: '#/components/schemas/MonetaryAmount'
        paymentStatus:
          type: string
          enum:
          - CURRENT
          - OVERDUE
          - DELINQUENT
        lastPaymentDate:
          type: string
          format: date
        lastPaymentAmount:
          $ref: '#/components/schemas/MonetaryAmount'
    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:
            $ref: '#/components/schemas/SubscriptionItem'
        paymentMethod:
          type: string
          description: Identifier of the payment method on file
        metadata:
          type: object
          additionalProperties:
            type: string
        createdAt:
          type: string
          format: date-time
        modifiedAt:
          type: string
          format: date-time
    ErrorResponse:
      type: object
      properties:
        error:
          type: object
          properties:
            code:
              type: string
            message:
              type: string
            target:
              type: string
            details:
              type: array
              items:
                type: object
                properties:
                  code:
                    type: string
                  message:
                    type: string
    MonetaryAmount:
      type: object
      required:
      - value
      - currency
      properties:
        value:
          type: number
          format: double
        currency:
          type: string
          pattern: ^[A-Z]{3}$
          description: ISO 4217 currency code
    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:
    Limit:
      name: limit
      in: query
      description: Maximum number of items to return
      schema:
        type: integer
        default: 20
        minimum: 1
        maximum: 100
    CustomerId:
      name: customerId
      in: path
      required: true
      description: Unique identifier of the customer
      schema:
        type: string
    Offset:
      name: offset
      in: query
      description: Number of items to skip for pagination
      schema:
        type: integer
        default: 0
        minimum: 0
  responses:
    Unauthorized:
      description: Authentication required or invalid credentials
      content:
        application/json:
          schema:
            $ref: '#/components/schemas/ErrorResponse'
    InternalServerError:
      description: Internal server error
      content:
        application/json:
          schema:
            $ref: '#/components/schemas/ErrorResponse'
    NotFound:
      description: Resource not found
      content:
        application/json:
          schema:
            $ref: '#/components/schemas/ErrorResponse'
  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