DWW0451S A gap is encountered between record nn1 and record nn2 on log dddd when reading forward. Processing terminates.

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Same as explanation for message DWW0450W, except that this message is issued if command SEQCHKR GAPINSEQUENCE(STOP) is specified, or if STOP is specified in the sequence checking secondary window.

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CICS® VR stops the recovery and prints the reports.

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• Batch–Find out why there is a gap in the label records. (Check the contents of the log to see whether all records needed for recovery are present.) Rerun CICS VR.

  If you want to accept the error message, specify either of these commands:

  SEQCHKR GAPINSEQUENCE(WARNING)    
SEQCHKR GAPINSEQUENCE(IGNORE)

  Remember to restore the VSAM data sets from the backup copies before you rerun CICS VR.

• Online–If a log containing records needed for recovery is missing, archive this log and rerun CICS VR.

  If all logs are present, find out why there is a gap in the label records. (Check the contents of the log to see whether all records needed for recovery are present.)

  If you want to accept the error message, specify either WARNING or IGNORE in the sequence checking secondary window.

  Remember to restore the VSAM data sets from the backup copies before you resubmit the recovery job.