> ## Documentation Index > Fetch the complete documentation index at: https://docs.singapay.id/llms.txt > Use this file to discover all available pages before exploring further. # Payment Postpaid (v2) > Process a postpaid bill payment using a reference number obtained from a prior inquiry (V2). Requires the merchant credential password for authorization. ## OpenAPI ````yaml https://biller-b2b.singapay.id/docs post /api/v2/postpaid/payment openapi: 3.0.0 info: title: B2B Biller API description: >- API documentation for the B2B Biller service. Provides endpoints for bill payments (postpaid/prepaid), transaction management, balance checking, and authentication. version: 1.0.0 servers: - url: https://sandbox-biller-b2b.singapay.id description: Sandbox - url: https://biller-b2b.singapay.id description: Production security: [] tags: - name: Authentication description: OAuth2 token generation - name: General description: Bill transaction listing, detail, balance, and utilities - name: Postpaid V1 description: Postpaid bill inquiry and payment (V1) - name: Prepaid V1 description: Prepaid inquiry and payment — PLN Token, Pulsa, Paket Data (V1) - name: Postpaid V2 description: Postpaid bill inquiry and payment (V2) - name: Prepaid V2 description: Prepaid inquiry, payment, and game topup (V2) paths: /api/v2/postpaid/payment: post: tags: - Postpaid V2 summary: Payment Postpaid (v2) description: >- Process a postpaid bill payment using a reference number obtained from a prior inquiry (V2). Requires the merchant credential password for authorization. operationId: postpaidPaymentV2 parameters: - name: X-PARTNER-ID in: header description: Your unique partner API key required: true schema: type: string - name: Accept in: header required: true schema: type: string default: application/json - name: Content-Type in: header required: true schema: type: string default: application/json requestBody: required: true content: application/json: schema: required: - command - data properties: command: description: Product category code type: string enum: - pdam - plnpos - plnnon - intv - bpjsks - bputk - putk - mobpos example: plnpos data: required: - password - product_code - customer_id - reference_number properties: password: description: Merchant credential password type: string product_code: description: Product code type: string example: SPPLNPOS customer_id: description: Customer/subscriber ID type: string example: '114676170021' reference_number: description: Reference number from inquiry type: string example: SPPLNPOSRJBL0057437746821761805651 phone_number: description: Customer phone number type: string maxLength: 25 nullable: true type: object type: object examples: PLN Pascabayar: summary: PLN Pascabayar Payment value: command: plnpos data: password: merchant_password product_code: SPPLNPOS customer_id: '114676170021' reference_number: SPPLNPOSRJBL0057437746821761805651 PLN Non Tag: summary: PLN Non Tagihan Payment value: command: plnnon data: password: merchant_password product_code: SPPLNNON customer_id: '114676170021' reference_number: SPPLNNONRJBL0057437746821761805700 BPJS Kesehatan: summary: BPJS Kesehatan Payment value: command: bpjsks data: password: merchant_password product_code: SPBPJSKSPOS customer_id: '8888802379205901' reference_number: SPBPJSKSPOSRJBL0051066291251761805800 BPJS TK PU: summary: BPJS Ketenagakerjaan PU Payment value: command: bputk data: password: merchant_password product_code: SPBPUTKPOS customer_id: '0000012345678' reference_number: SPBPUTKPOSRJBL0051066291251761805900 BPJS TK BPU: summary: BPJS Ketenagakerjaan BPU Payment value: command: putk data: password: merchant_password product_code: SPPUTKPOS customer_id: '0000012345678' reference_number: SPPUTKPOSRJBL0051066291251761806000 PDAM: summary: PDAM Payment value: command: pdam data: password: merchant_password product_code: SPPDAMPOS customer_id: '0812345678' reference_number: SPPDAMPOSRJBL0012345678901761806100 Internet TV: summary: Internet TV Payment value: command: intv data: password: merchant_password product_code: SPINTVPOS customer_id: '121234567890' reference_number: SPINTVPOSRJBL0012345678901761806200 Pulsa Pascabayar: summary: Pulsa Pascabayar Payment value: command: mobpos data: password: merchant_password product_code: SPMOBPOS customer_id: '081234567890' reference_number: SPMOBPOSRJBL0012345678901761806300 responses: '200': description: Payment successful content: application/json: schema: properties: command: type: string example: plnpos response_code: type: string example: '00' response_text: type: string example: Payment success data: description: Payment result (structure varies by product category) properties: amount: type: string example: '69674' customer_name: type: string example: JOHN DOE period: type: string example: '4' customer_id: type: string example: '114676170021' price: type: string example: '74194' transaction_id: type: string example: 01JXCK6K1CMRGJKQ2J863Q6P5J created_at: type: string example: '2025-10-30 13:28:45' type: object type: object examples: PLN Pascabayar Success: summary: PLN Pascabayar payment success value: command: plnpos response_code: '00' response_text: Payment success data: amount: '69674' customer_name: JOHN DOE period: '4' customer_id: '114676170021' price: '74194' transaction_id: 01JXCK6K1CMRGJKQ2J863Q6P5J created_at: '2025-10-30 13:28:45' BPJS Kesehatan Success: summary: BPJS Kesehatan payment success value: command: bpjsks response_code: '00' response_text: Payment success data: amount: '70000' customer_name: KAYAH period: '1' customer_id: '8888802379205901' price: '72500' transaction_id: 01JXCK7A2DNRHJLR3K975R7Q6K created_at: '2025-10-30 13:30:55' PDAM Success: summary: PDAM payment success value: command: pdam response_code: '00' response_text: Payment success data: amount: '85000' customer_name: SUHERMAN period: '202406' customer_id: '0812345678' price: '92500' transaction_id: 01JXCK8B3EOSIKMS4L086S8R7L created_at: '2025-10-30 13:33:20' '401': description: Unauthorized content: application/json: schema: $ref: '#/components/schemas/UnauthorizedErrorResponse' '422': description: Validation error content: application/json: schema: $ref: '#/components/schemas/ValidationErrorResponse' '500': description: System error content: application/json: schema: properties: command: type: string example: plnpos response_code: type: string example: '99' response_text: type: string example: System error, please try again type: object security: - bearerAuth: [] components: schemas: UnauthorizedErrorResponse: description: Unauthorized error response (HTTP 401) required: - status - success - error properties: status: type: integer example: 401 success: type: boolean example: false error: properties: code: type: integer example: 401 message: type: string example: Unauthorized merchant, please sign in type: object type: object ValidationErrorResponse: description: Validation error response (HTTP 422) required: - command - response_code - response_text - data properties: command: type: string example: detail-bill-transaction response_code: type: string example: '04' response_text: type: string example: Rejected Format Error data: description: Field-level error messages type: object example: data: The data field is required. data.transaction_id: The data.transaction id field is required. additionalProperties: type: string type: object securitySchemes: bearerAuth: type: http description: JWT Bearer token obtained from /api/v1.0/access-token/b2b bearerFormat: JWT scheme: bearer ````