Specifying access to a CICS region control file

As discussed under The control file table, the ISPF administration interface is one of the CICS BAC components that needs access to the CICS BAC control file of each CICS® region. However, unlike its counterpart, the workstation administration client, the ISPF administration interface does not use the services of the communication server. Instead, the ISPF administration interface obtains access to the appropriate control file in one of the following ways:

If access to EXCI fails because the SDFHEXCI load library is not in either the linklist or the user TSO logon PROC, the ISPF administration interface fails with a system abend code 806, reason code 04.