The current XML API documentation lists:
https://api.realexpayments.com/remote
https://api.sandbox.realexpayments.com/remote
The recent Apigee X migration documentation also instructs integrations to use the /remote sandbox endpoint.
However, PHP SDK 14.4.3 still defines:
https://api.realexpayments.com/epage-remote.cgi
https://api.sandbox.realexpayments.com/epage-remote.cgi
in ServiceEndpoints.php.
Both endpoints currently appear to work in sandbox.
Could you clarify which endpoint GP-ECOM integrations should use going forward, particularly after the Apigee X migration? Should the SDK constants be updated to /remote?

The current XML API documentation lists:
https://api.realexpayments.com/remote
https://api.sandbox.realexpayments.com/remote
The recent Apigee X migration documentation also instructs integrations to use the /remote sandbox endpoint.
However, PHP SDK 14.4.3 still defines:
https://api.realexpayments.com/epage-remote.cgi
https://api.sandbox.realexpayments.com/epage-remote.cgi
in ServiceEndpoints.php.
Both endpoints currently appear to work in sandbox.
Could you clarify which endpoint GP-ECOM integrations should use going forward, particularly after the Apigee X migration? Should the SDK constants be updated to /remote?