Hello All,
We've implemented PayPal pro SOAP integration 3 years back for our desktop application. Everything is working fine for some of our customers. But some merchants are unable to process payment and we're getting following errors please help...
1. Could not establish trust relationship for the SSL/TLS secure channel
2. The remote server returned an error: (500) Internal Server Error.
3. Internal error
We're still surprise why same code is working in sandbox and some merchants and not working for some merchants.
Please help...