MVS SYSTEM CODES -S237

An error occurred in end-of-volume processing of a magnetic tape data set.

Possible causes & Solution:
1. The block count of the tape label did not agree with that of the DCB. One or more blocks may have been skipped during processing.
2. An incorrect volume serial number was specified in the volume parameter of the DD statement.
3. An incorrect volume was mounted.
4. The DSN was misspelled.
1) Verify that the DSN is spelled correctly, and that the correct volume(s) are specified and mounted. Correct any errors, and resubmit the job.
2) If all the data set information appears correct, resubmit the job specifying a different device in the unit parameter of the JCL. If this does not correct the error, re-create the data set.

Ref: www.ibmmainframes.com