The Turkish Garanti Bank payment gateway module is available in WHMCS.

Supported Features #

Type: Merchant (Credit Card)

Adding the Turkish Garanti Bank Payment Gateway #

To set up the Turkish Garanti Bank payment gateway in WHMCS:

1. Go to Configuration () > Apps & Integrations or Addons > Apps & Integrations.
2. Click Turkish Garanti Bank.
3. Check Show on Order Form to display this payment method in the Client Area during checkout.
4. Obtain and enter your Garanti Bank credentials:
   1. Log in to the Virtual POS interface.
   2. Go to Administration > Password/Keyword Reset.
   3. Note the ID number for Authorisation User and enter it for Merchant Number in WHMCS.
   4. Click Authorisation Username to specify a password and enter it for Merchant Password in WHMCS.
   5. Note the merchant ID in the top-left of the screen next to your name. Enter it for Merchant ID in WHMCS.
5. In WHMCS, for Isokod, enter 949 if your account operates in YTL or 840 if your account operates in USD.
6. Click Save Changes.

Test Mode #

You can use test mode to simulate payment processing without actually causing a transaction to occur. This can be useful for testing your configuration.

Troubleshooting #

You can find information about most payment gateway-related errors in the logs at Billing > Gateway Log and in the Module Log.

Last modified: 2025 July 28