[1] Log into your
Verifone account.
[2] From the left menu, select 'Integrations > Webhooks & API'.
[3] Generate a 'Instant Notification Service (INS) secret word'.
[4] Check the 'Enable INS' and 'Enable global URL' boxes and in the 'Enable global URL' box, enter the full url to the 'control/callback.php' file in your installation. Your shop MUST be installed on the domain registered in your Verifone
account. Verifone will not send callbacks to other domains (check with Verifone to see if this still applies). This is a restriction of Verifone.
Redirect url and other options can be left blank.
INS is set up.
Enter account and secret word details in your gateway parameters section in your Maian Checkout admin CP. See below for reference.