DWW0554W

An unexpected zero sequence number was found when reading backward on log dddd. The zero record precedes record nn1. Processing continues.

Explanation

A label record with a zero sequence number was found, and the record before it on the log (nn1) does not have the maximum sequence number (232-1). Both records are on log dddd. Some possible causes are:
  • The sequence number was reset to zero by CICS®. If you are not using a journal archive control data set (JACD), CICS resets the sequence number at every cold start and warm start. CICS VR functions correctly in this situation.
  • A zero sequence number occurred because the JACD is damaged or lost. CICS VR functions correctly in this situation.
  • A log was skipped during archiving, and the next log started with a record with a zero sequence number.
  • A log had data other than log records.

This message is issued if command SEQCHKR RESETSEQUENCE(WARNING) is specified, or if WARNING is specified in the sequence checking secondary window.

System action

CICS VR continues the backout.

User response