Documentation/API/Payments
Payment Transfers
API reference for processing payments and transfers
VERTEX ENGINE
00
Table of Contents
1. Transfer EFT/RTC
Initiates an Electronic Funds Transfer (EFT) or Real-Time Credit (RTC) payment.
Subject: svc.account.<partner_id>.transfer_eft_rtc
Request
{
"account_id": "string", // Required - UUID of the account making the transfer
"clientTxId": "string", // Required - client side tx id to avoid duplicate transactions (UUID)
"amount": 1000, // Required - amount in cents as int64 (min: 100 = R1.00, e.g., 1000 = ZAR 10.00)
"ref": "string", // Required - reference for the recipient
"pay_and_clear": true, // Optional - true for RTC (instant), false/omit for EFT (batch)
"own_ref": "string", // Required - your reference (2-50 characters)
"account_number": "string", // Required - recipient account number
"branch_code": "string", // Required - recipient bank branch code
"name": "string" // Required - recipient name
}Required Fields
account_id- UUID of the account making the transferclientTxId- Client-side transaction ID (UUID) to prevent duplicate transactions. The clientTxId provides idempotency. The cache duration is environment-specific.amount- Amount in cents as int64 (e.g., 1000 = ZAR 10.00). Minimum 100 (R1.00)ref- Payment reference for the recipientpay_and_clear- Payment type: true for RTC (instant clearing), false for EFT (batch processing)own_ref- Your internal reference (2-50 characters)account_number- Recipient's bank account numberbranch_code- Recipient's bank branch codename- Recipient's name as it appears on their account
Response
{
"tx_id": "string", // UUID of the created transaction
"amount": "string" // Amount as string
}Possible Errors
400 Bad Request: Invalid request data or insufficient funds401 Unauthorized: Authentication failed409 Conflict: Duplicate transaction (same clientTxId used within cache duration)500 Internal Server Error: Server-side error occurred
Notes
- RTC vs EFT: Set
pay_and_clear: truefor instant transfers (RTC) orpay_and_clear: falsefor batch processing (EFT) - Amount format: The amount field is int64 in cents (request), but returns as string (response)
- Reference validation: Ensure
own_refis 2-50 characters - Idempotency: The
clientTxIdprovides idempotency. The cache duration is environment-specific.