Explanation: The terminal control address space
(TCAS) was unable to continue its normal processing because of an
error. The low-order bytes of Register 15 and the TCAS work area (TWAR)
field TWARSON both contain the reason code that indicates the cause
of the error.
- Reason code in hexadecimal
- Explanation
- 00
- A STOP command was entered.
- 04
- A START command that is not valid was entered.
- 10
- The TCAS main task was unable to attach the VTAM® interface subtask.
- 14
- The TCAS main task was unable to attach the user-interface subtask.
- 18
- The TCAS main task was unable to attach the console-communication
subtask.
- 1C
- TCAS was unable to obtain storage for the TCAS table (TCAST) in
the common service area (CSA).
- 20
- The TCAS main task abnormally terminated and was unable to recover.
- 30
- The VTAM interface subtask
abnormally terminated and was unable to recover.
- 34
- The user-interface subtask abnormally terminated and was unable
to recover.
- 38
- The console-communication subtask abnormally terminated and was
unable to recover.
System action: TCAS abnormally terminates.
Operator Response: Reply ‘DUMP’ to
TCAS termination message IKT012D to obtain a dump.
Problem Determination:
- Save the console log from the primary console. For systems with
remote consoles, save the remote console log. For systems with multiple-console
support (MCS), save a copy of the hard copy log.
- Save the system output (SYSOUT) associated with the job.
- Save all the associated output.
- Save the dump.
- Print the associated SVC dump data set, using IPCS. See z/OS Communications Server: SNA Diagnosis Vol
1, Techniques and Procedures for information about IPCS.