The Gateway Log displays information about transactions that WHMCS makes or attempts with integrated payment gateways. You can use this information to troubleshoot various payment gateway issues.

You can view this log at Billing > Gateway Log.

Using the Gateway Log #

If a WHMCS-integrated payment gateway has made a payment return, details will appear here. Each return has three possible outcomes: Successful, Invalid, or Error.

Successful #

A Successful payment return occurs when WHMCS automatically identifies and restores the payment and performs any required actions.

Invalid #

An Invalid return occurs when the gateway returns unexpected or invalid data (for example, the invoice ID is wrong or the payment value doesn’t match).

Error #

An Error return occurs if the data from the payment gateway contains errors or the system can’t verify it.

Last modified: January 9, 2025