Greeting Martin,
I appreciate the reply. In our case we DO have our certificate already imported into STRUST. Part of that import procedure was we had to supply the intermediate and root certificate to SAP. So in our case we have the certificate, its intermediate, and the root imported into SAP, but it seems SAP is not supplying these to these to its peer (server) when we try to use the RFC configured to use the PSE.
Any other thoughts?