I have successfully set up nuSoap on a Linux server where a portal is handshaking with a Windows Server of a Vendor. Everything is working fine on our end. Visitors can come from Vendor website and be automatically logged into our portal. But the Vendors are saying the following: "I see duplicates so it appears that the issue might be that the transfers are being used more than once. Only one transfer is allowed per request."
I have no clue what they are talking about and why everything is working fine on our side but their system is saying that there are more than one transfer taking place. Can anyone point me in any direction?
I know this is a vague question. But I do not know where to begin to look to try to solve something that is showing up on their end.