Procedure

Determine whether failure-related DFSMStvs return codes and reason codes exist.
DFSMStvs provides return codes in register 15 and reason codes in either the access method control block (ACB) or the request parameter list (RPL). Reason codes in the ACB indicate VSAM open or close errors. Reason codes in the RPL indicate record management error indications returned to the caller of DFSMStvs.
Record any failure-related RPL feedback word (a hexadecimal full word) and RPL return code on the Keyword Worksheet, in z/OS DFSMSdfp Diagnosis, as modifier keywords. The IBM Support Center can use these values to identify a failure-related module and the nature of the incorrect output.
Example: If the RPL feedback word is X'000C0010', specify the following keywords:
```
RPLFDBWD 000C0010
```
Determine whether you have a damaged VSAM data set.
Some incorrect output failures involve a damaged VSAM data set. To determine whether you have a damaged data set, use the IDCAMS EXAMINE command as described in the chapter on functional command format in z/OS DFSMS Access Method Services Commands and the chapter on checking a VSAM key-sequenced data set cluster for structural errors in z/OS DFSMS Using Data Sets. The EXAMINE command provides details about the nature of data set damage.

If these service aids indicate that the data set is not damaged, inform the IBM Support Center if you call for assistance. If they indicate that the data set is damaged, keep a copy of the output for possible use by the IBM Support Center. Be prepared to describe the type of data set damage. You should attempt to recover the data set and rerun the failing job to determine whether the problem is resolved.
The system can indicate a damaged data set by one of the following:
- Messages (discussed in message section)
- ABEND0C4 (discussed in ABEND section)
- Wait/Loop (discussed in wait/loop section)
- RPL feedback word: nnX'08'nnX'9C' or nnX'08'nnX'20'.
If the data set is damaged, rebuild it as directed in the topic that describes VSAM record management damaged data sets in z/OS DFSMSdfp Diagnosis and rerun the job.
See z/OS DFSMSdfp Diagnosis.