If you code GWSSCP=NO, trial-and-error routing of session initiation requests in the originating domain can be done, but no rerouting is possible for session initiation requests received by this host from other SSCPs.

Coding GWSSCP=YES for a VTAM® that does not activate gateway NCPs permits VTAM to reroute received session establishment and directory requests. It also enables you to code GWPATH definition statements in conjunction with a CDRM definition to define multiple gateway paths to that CDRM.