Why do I receive an SSL API error when I use the Zendesk API on SAP ERP?
The SSL API error is caused by a missing certificate in the SAP configuration, as mentioned in this article from the SAP Community Wiki: Troubleshooting Guide - How to troubleshoot the SSSLERR_PEER_CERT_UNTRUSTED (peer certificate (chain) is not trusted) issue.
To solve the issue, import the Root CA of the missing certificate instead of the certificate itself. In the example below, it's the Baltimore CyberTrust Root that you find when you open the certificates on your subdomain.
Download the root certificate and import it in SAP.
In Zendesk, we use SNI certificates, which means that to get the correct certificate, you have to specify the server name when you make the connection.
Most modern libraries support SNI by default. If this is not your case, either update your library to a newer version or specifically set a parameter to enable SNI on your requests.
For more information, see the article: Global security and sign-in resources