Non‑breaking API update: new response field for /v2/transactions (biller_code)

Effective date: 14 October 2025

Overview

We're adding an optional field to the v2 transactions endpoint to return the JomPAY biller code where applicable. This is an additive, backward‑compatible change. No request parameters, pagination, status codes, or rate limits are affected.

Endpoint impacted:
GET /v2/transactions

What's changing:
New field in each item under data[]:
biller_code (string|null): JomPAY biller code for JomPAY transactions; null for non‑JomPAY transactions.

Backward compatibility:
Non‑breaking; existing fields and formats are unchanged.
biller_code will be present and may be null for non‑JomPAY transactions and some historical records.

If you use strict JSON schema/model validation, update your models to include biller_code or configure them to ignore unknown properties.

Actions for integrators:
No action required to maintain existing functionality.

Optional:
Surface biller_code in your UI or reports for JomPAY transactions and handle null safely.
If indexing or filtering by biller_code, account for null values.