openapi: 3.0.1
info:
  title: Taxation
  description: "This service provides comprehensive taxation management capabilities\
    \ for MTN operations including tax calculation, validation, reporting, and compliance.\
    \ It handles various taxation scenarios including service tax, VAT, and regulatory\
    \ tax requirements, integrating with multiple tax systems across the MTN ecosystem."
  license:
    name: MADAPI
    url: https://developers.mtn.com/
  version: 3.0.0
servers:
- url: https://api.mtn.com/v1
  description: Production Server
security:
- OAuth2: []
tags:
- name: Taxation
paths:
  /{accountHolderId}/reserve:
    post:
      tags:
      - Taxation
      summary: Request for the taxable amount
      description: "This operation retrieves the taxable amount of a transaction from\
        \ the Ghana Revenue Authority. The endpoint supports e-levy calculations,\
        \ MSISDN validation, country code processing, and comprehensive financial\
        \ resource management with system endpoint routing."
      operationId: Taxation_post_getTaxationAmount_accountHolderIdreser
      parameters:
      - name: accountHolderId
        in: path
        required: true
        schema:
          type: string
      - name: targetSystem
        in: header
        required: true
        schema:
          type: string
      - name: transactionId
        in: header
        required: false
        schema:
          type: string
      - name: x-authorization
        in: header
        required: false
        schema:
          type: string
      - name: x-country-code
        in: header
        required: true
        schema:
          type: string
      requestBody:
        content:
          application/json:
            schema:
              title: ElevyRequest
              type: object
              properties:
                receiverAccountNumber:
                  type: string
                receiverInstitutionId:
                  type: string
                senderIssuerId:
                  type: string
                transferAmount:
                  type: string
                senderAccountNumber:
                  type: string
                chargingPartyId:
                  type: string
                clientTimestamp:
                  type: string
                resourceId:
                  type: string
        required: true
      responses:
        "200":
          description: HTTP 200 indicating the request succeeded; the response body
            follows the documented schema for this operation and includes correlation
            identifiers where applicable for traceability across MTN MADAPI TMF908-iot-Device
            Management flows.
          content:
            application/json:
              schema:
                title: TaxationResponse
                type: object
                properties:
                  eLevyId:
                    type: string
                  taxableAmount:
                    type: string
                  currency:
                    type: string
                  operation:
                    type: string
                  statusCode:
                    type: string
                  transactionId:
                    type: string
        "400":
          description: "Bad request. Invalid request parameters, missing required\
            \ fields, or validation errors."
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/APIError'
        "401":
          description: "Unauthorized. Invalid or missing authorization credentials,\
            \ insufficient permissions, or authentication failure."
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/APIError'
        "403":
          description: Forbidden. Access denied. The request is valid but the server
            refuses to perform it.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/APIError'
        "404":
          description: Not found. The requested resource was not found or does not
            exist.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/APIError'
        "500":
          description: "Internal server error. Unexpected system failure, database\
            \ connectivity issues, or external service integration problems."
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/APIError'
        "502":
          description: Bad gateway. The server acting as a gateway received an invalid
            response from an upstream server.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/APIError'
        "503":
          description: Service unavailable. The server is temporarily unable to handle
            the request due to maintenance or overload.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/APIError'
      deprecated: false
components:
  schemas:
    com_mtn_madapi_ecw_models_madapi_elevy_ElevyRequest:
      title: ElevyRequest
      type: object
      properties:
        receiverAccountNumber:
          type: string
        receiverInstitutionId:
          type: string
        senderIssuerId:
          type: string
        transferAmount:
          type: string
        senderAccountNumber:
          type: string
        chargingPartyId:
          type: string
        clientTimestamp:
          type: string
        resourceId:
          type: string
    com_mtn_aggregator_models_response_TaxationResponse:
      title: TaxationResponse
      type: object
      properties:
        eLevyId:
          type: string
        taxableAmount:
          type: string
        currency:
          type: string
        operation:
          type: string
        statusCode:
          type: string
        transactionId:
          type: string
    APIError:
      title: APIError
      required:
      - statusCode
      - statusMessage
      type: object
      properties:
        statusCode:
          type: string
          description: Error status code
          example: "400"
        statusMessage:
          type: string
          description: Human-readable error message
          example: Bad request. Invalid parameters provided.
        supportMessage:
          type: string
          description: Technical support message or error code for troubleshooting
          example: VALIDATION_ERROR
        transactionId:
          type: string
          description: Transaction identifier for tracking and correlation
          example: "1234567890"
        sequenceNo:
          type: string
          description: Sequence number for request tracking
          example: "20250115120000001"
        timestamp:
          type: string
          description: Error timestamp in ISO 8601 format
          format: date-time
          example: 2025-01-15T12:00:00Z
        path:
          type: string
          description: API endpoint path where the error occurred
          example: /api/v1/resource
        method:
          type: string
          description: HTTP method of the request that caused the error
          example: POST
        downstreamStatusCode:
          type: string
          description: Downstream service error code if applicable
      description: Generic MADAPI error response structure
      example:
        statusCode: "400"
        statusMessage: "Bad request. Invalid request parameters, missing required\
          \ fields, or validation errors."
        supportMessage: API_ERROR
        transactionId: "1234567890"
        sequenceNo: "20250115120000001"
        timestamp: 2025-01-15T12:00:00Z
  securitySchemes:
    OAuth2:
      type: oauth2
      flows:
        clientCredentials:
          tokenUrl: https://api.mtn.com/v1/oauth/access_token
          scopes: {}
    Bearer:
      type: http
      description: Bearer token received from OAuth2.0 authentication with the MADAPI
      scheme: bearer
      bearerFormat: JWT