A problem can occur if SSL has been configured for a connection that does not use SSL.
Whilst attempting to establish an IPIC over SSL connection between CICS Transaction Gateway and CICS Transaction Server, the following message appears in the CICS Transaction Server log:
DFHIS1012 Invalid capability exchange request received on TCPIPSERVICE tcpipservice
Either SSL on CICS Transaction Gateway has been incorrectly configured, or the CICS Transaction Server TCPIPSERVICE definition has been incorrectly configured for SSL.
Ensure that your configuration is correct. For more information see Scenarios.