Filter to check if a 2Checkout request is valid or not.

apply_filters( 'pmpro_twocheckout_validate', bool $r, object $check );

Parameters

$r

bool true or false if the request is valid

$check

mixed remote post object from request to 2Checkout

Source

File: https://github.com/strangerstudios/paid-memberships-pro/blob/master/services/twocheckout-ins.php