openapi: 3.0.3
info:
  title: SAP BRIM (Billing and Revenue Innovation Management) SAP BRIM Convergent Charging Balances 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: Balances
  description: Account balance inquiries and adjustments
paths:
  /balances/{accountId}:
    get:
      operationId: getAccountBalance
      summary: SAP BRIM (Billing and Revenue Innovation Management) Get account balance
      description: Retrieves the current balance information for a subscriber account, including available balance, reserved amounts, and credit limits.
      tags:
      - Balances
      parameters:
      - $ref: '#/components/parameters/AccountId'
      responses:
        '200':
          description: Account balance details
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/AccountBalance'
        '401':
          $ref: '#/components/responses/Unauthorized'
        '404':
          $ref: '#/components/responses/NotFound'
        '500':
          $ref: '#/components/responses/InternalServerError'
  /balances/{accountId}/topup:
    post:
      operationId: topUpBalance
      summary: SAP BRIM (Billing and Revenue Innovation Management) Top up account balance
      description: Adds funds to a prepaid account balance.
      tags:
      - Balances
      parameters:
      - $ref: '#/components/parameters/AccountId'
      requestBody:
        required: true
        content:
          application/json:
            schema:
              type: object
              required:
              - amount
              properties:
                amount:
                  $ref: '#/components/schemas/MonetaryAmount'
                reference:
                  type: string
                  description: External payment reference
                expiresAt:
                  type: string
                  format: date-time
                  description: Expiry date for the topped-up balance
      responses:
        '200':
          description: Balance topped up
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/AccountBalance'
        '400':
          $ref: '#/components/responses/BadRequest'
        '401':
          $ref: '#/components/responses/Unauthorized'
        '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:
    AccountBalance:
      type: object
      properties:
        accountId:
          type: string
        accountType:
          type: string
          enum:
          - PREPAID
          - POSTPAID
        availableBalance:
          $ref: '#/components/schemas/MonetaryAmount'
        reservedAmount:
          $ref: '#/components/schemas/MonetaryAmount'
        totalBalance:
          $ref: '#/components/schemas/MonetaryAmount'
        creditLimit:
          $ref: '#/components/schemas/MonetaryAmount'
        lastUpdated:
          type: string
          format: date-time
    ErrorResponse:
      type: object
      properties:
        error:
          type: object
          properties:
            code:
              type: string
            message:
              type: string
            target:
              type: string
            details:
              type: array
              items:
                type: object
                properties:
                  code:
                    type: string
                  message:
                    type: string
    MonetaryAmount:
      type: object
      required:
      - value
      - currency
      properties:
        value:
          type: number
          format: double
          description: The monetary value
        currency:
          type: string
          pattern: ^[A-Z]{3}$
          description: ISO 4217 currency code
  parameters:
    AccountId:
      name: accountId
      in: path
      required: true
      description: Unique identifier of the subscriber account
      schema:
        type: string
  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