During an active monitoring session, the receiving terminal can hang rather than display a breakpoint.
Actively monitoring a CICS application program with Intertest.
The most common cause of this problem is the CA InterTest for CICS breakpoint transaction, VTAT, has received a security violation when attempting to display the breakpoint. This can often occur when the CICS transaction is not associated with a terminal and the originating terminal is defined as FROM=.ANY or FROM=.NO through the LIST Profile.
Ensure that there are no external security restrictions defined for the VTAT transaction.
Please refer to the CA InterTest for CICS Installation Guide, Chapter 3: System Requirements. The section entitled CA ACF2 and RACF Users specifies that all security must be removed from the IPLX, ISER, VIRC, LIST, and VTAT transactions. For optimal performance, security should be removed from the CNTL transaction as well
This same information can be found in the Documentation wiki for InterTest and Symdump r10.0 and r11.0 under Product Requrements