This section applies only to those terminals which are logged on using the generic resource name.
When an ATI request is issued in an AOR for a terminal that is logged on to a TOR, CICS® uses the terminal definition in the AOR to determine the identity of the TOR to which the request should be shipped. If there is no terminal definition in the AOR, the "terminal-not-known" global user exits (XICTENF and XALTENF) may be used to supply the name of the TOR.
However, if the TOR in question is a member of a generic resource and the user has logged on using the generic resource name, VTAM® will have connected the terminal to the generic resource member which was most lightly loaded at the time. If the user then logs off and on again the terminal may be connected to a different generic resource member. If this happens, the TOR which is to receive the ATI request cannot be determined from the terminal definition in the AOR or the "terminal-not-known" user exit.
CICS solves the problem in the following manner:
The INQUIRE will not succeed if the TORs and the AOR are in different networks.
If the INQUIRE is successful the ATL request is shipped to the TOR where the terminal is logged on.