When a VTAM® node loses its link to the generic resource structure, it initiates a structure rebuild to attempt to rebuild the generic resource structure on another coupling facility to which all VTAM nodes in the generic resource configuration have access. The rebuild structure process can be stopped by a peer node that is either unable to connect to, or loses its connection to, the new version of the generic resource structure.

If the generic resource structure is rebuilt to a coupling facility that is not accessible by all nodes, the VTAM that has no link to the current version of the generic resource structure disconnects from the structure. Other VTAMs provide the necessary cleanup, and when the failing link is repaired the disconnected VTAM attempts to reconnect to the generic resource structure.