A map of the application programs that are members of each generic resource is kept in a generic resource structure. When an LU initiates a session using a generic resource name, VTAM® establishes the session with one of the members that is mapped to that name.

Figure 1 shows how the mapping identifies the application programs that are using the different generic resource names. In this example, APPLA, APPLB, and APPLC are represented to the network as JOHN. APPLD is using the generic resource name SEAN.

Figure 1. Generic resource mapping