openapi: 3.0.3
info:
  title: SAP BRIM ( and Revenue Innovation Management) SAP BRIM Convergent Charging Balances Billing 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: Billing
  description: Billing cycle and invoice generation operations
paths:
  /subscriptions/{subscriptionId}/billing-history:
    get:
      operationId: getSubscriptionBillingHistory
      summary: SAP BRIM (Billing and Revenue Innovation Management) Get subscription billing history
      description: Retrieves the billing history for a subscription, including all generated invoices and payment records.
      tags:
      - Billing
      parameters:
      - $ref: '#/components/parameters/SubscriptionId'
      - $ref: '#/components/parameters/Offset'
      - $ref: '#/components/parameters/Limit'
      responses:
        '200':
          description: Billing history
          content:
            application/json:
              schema:
                type: object
                properties:
                  results:
                    type: array
                    items:
                      $ref: '#/components/schemas/BillingRecord'
                  totalCount:
                    type: integer
                  offset:
                    type: integer
                  limit:
                    type: integer
        '401':
          $ref: '#/components/responses/Unauthorized'
        '404':
          $ref: '#/components/responses/NotFound'
        '500':
          $ref: '#/components/responses/InternalServerError'
  /subscriptions/{subscriptionId}/generate-invoice:
    post:
      operationId: generateInvoice
      summary: SAP BRIM (Billing and Revenue Innovation Management) Generate an invoice for a subscription
      description: Manually triggers invoice generation for a subscription outside of the normal billing cycle. Useful for ad-hoc or on-demand billing.
      tags:
      - Billing
      parameters:
      - $ref: '#/components/parameters/SubscriptionId'
      requestBody:
        required: false
        content:
          application/json:
            schema:
              type: object
              properties:
                billingPeriodStart:
                  type: string
                  format: date
                billingPeriodEnd:
                  type: string
                  format: date
                includeUsageCharges:
                  type: boolean
                  default: true
      responses:
        '201':
          description: Invoice generated
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/BillingRecord'
        '400':
          $ref: '#/components/responses/BadRequest'
        '404':
          $ref: '#/components/responses/NotFound'
        '500':
          $ref: '#/components/responses/InternalServerError'
components:
  parameters:
    Limit:
      name: limit
      in: query
      description: Maximum number of items to return
      schema:
        type: integer
        default: 20
        minimum: 1
        maximum: 100
    SubscriptionId:
      name: subscriptionId
      in: path
      required: true
      description: Unique identifier of the subscription
      schema:
        type: string
        format: uuid
    Offset:
      name: offset
      in: query
      description: Number of items to skip for pagination
      schema:
        type: integer
        default: 0
        minimum: 0
  responses:
    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'
    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'
  schemas:
    BillingRecord:
      type: object
      properties:
        billingRecordId:
          type: string
          format: uuid
        subscriptionId:
          type: string
          format: uuid
        invoiceNumber:
          type: string
        billingPeriodStart:
          type: string
          format: date
        billingPeriodEnd:
          type: string
          format: date
        subtotal:
          $ref: '#/components/schemas/MonetaryAmount'
        tax:
          $ref: '#/components/schemas/MonetaryAmount'
        total:
          $ref: '#/components/schemas/MonetaryAmount'
        status:
          type: string
          enum:
          - DRAFT
          - ISSUED
          - PAID
          - OVERDUE
          - VOID
        issuedAt:
          type: string
          format: date-time
        dueDate:
          type: string
          format: date
        paidAt:
          type: string
          format: date-time
        lineItems:
          type: array
          items:
            type: object
            properties:
              description:
                type: string
              quantity:
                type: number
              unitPrice:
                $ref: '#/components/schemas/MonetaryAmount'
              amount:
                $ref: '#/components/schemas/MonetaryAmount'
    ErrorResponse:
      type: object
      properties:
        error:
          type: object
          properties:
            code:
              type: string
            message:
              type: string
            target:
              type: string
            details:
              type: array
              items:
                type: object
                properties:
                  code:
                    type: string
                  message:
                    type: string
    MonetaryAmount:
      type: object
      required:
      - value
      - currency
      properties:
        value:
          type: number
          format: double
        currency:
          type: string
          pattern: ^[A-Z]{3}$
          description: ISO 4217 currency code
  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