In your documentation you say allowed values for Payer Exist are 0, 1 or 2:  But the code will never allow for option "2" - it will either be 1 or 0  https://github.com/globalpayments/php-sdk/blob/fe6d4f35a76f11164fe2c4b812fc98c3f696c7ae/src/Gateways/GpEcomConnector.php#L270
In your documentation you say allowed values for Payer Exist are 0, 1 or 2:
But the code will never allow for option "2" - it will either be 1 or 0
php-sdk/src/Gateways/GpEcomConnector.php
Line 270 in fe6d4f3