Robuta

https://www.ibm.com/docs/en/db2-for-zos/13.0.0?topic=subsystems-basic-vtam-definitions
Some basic definitions are required for all VTAM connections.
installationmigrationbasicvtamdefinitions
https://www.ibm.com/docs/en/ims/15.3.0?topic=coupling-vtam-generic-resources-vgr-msc
MSC IMS systems outside of an IMSplex can use a VTAM generic resource group name (GRSNAME) to establish MSC link sessions with the IMSplex instead of using the...
generic resourcesimscommunicationsconnectionsvtam