The CTG_RRMNAME parameter cannot be used when XA support is enabled
If XA support is enabled, CTG_RRMNAME cannot be specified. The RRS resource manager name is generated from the APPLID and APPLIDQUALIFIER settings in the format 'CICSTG.APPLIDQUALIFIER.APPLID' or 'CICSTG.APPLIDQUALIFIER.APPLID.UA'. Refer to the CICS® Transaction Gateway Information Center for details.
The Gateway daemon will fail to initialize.
Remove the CTG_RRMNAME setting from your configuration, and configure the APPLID and APPLIDQUALIFIER. Refer to the CICS Transaction Gateway Information Center for details on how to migrate XA configurations.