VTAM® issues this message when the VTAM application program applname has issued a CLOSE ACB macro or when VTAM has attempted to close the application program’s access method control block (ACB).
This message is often displayed when the application issues a CLOSE ACB macro and then the application's underlying task is abnormally terminated. This abnormal termination results in VTAM attempting to close the ACB on behalf of the application. VTAM might not succeed in closing the ACB, but the CLOSE ACB issued by the application still succeeds.
It is also possible that a system error occurred.
The ACB might not be closed and system resources might be lost.
This is probably a software error. If this message appears for several different application programs or if critical resources are tied up, halt VTAM and restart it. In addition, save the system log and problem determination.
If this message appears during a halt of VTAM, enter a HALT CANCEL command.
Analyze the output from the operator to determine the cause of the problem.
Verify that the failing job step includes a SYSABEND DD statement.
See z/OS Communications Server: SNA Diagnosis Vol 1, Techniques and Procedures for more information on application program problems.
2
3