Connectors - v1.2.9
This page contains the following releases for v1.2.9:
v1.2.9
Release Dates
- Sandbox: 31.08.2026
Improvements
Automated Hold on Pin Debit Refunds to Prevent Double-Dipping Fraud
To help prevent "double-dipping" fraud on prepaid card refunds, single-message Pin Debit Refund events can now be automatically placed on a temporary hold instead of being credited to the available balance immediately.
How it Works: When a Pin Debit Refund event is received for a Current Account linked to a card token, Mambu checks whether refund hold settings are enabled for the account's savings product. If enabled, the refunded amount is placed on hold for the configured duration and released automatically after the configured hold duration has elapsed, with no manual intervention required. If no refund hold settings are enabled for the product, the refund falls through to the regular financial transaction flow and is credited immediately, as before.
Note: This behavior applies only to single-message Pin Debit Refund events processed through the Mambu Marqeta Connector. Dual-message refund flows and loan accounts are unaffected.
For more information, see Pin debit refund holds
For more information, see Mambu Release Cycle.