{process name} ({process id}) The log signature of the existing logfile {file name} doesn’t match the logfiles from the backup set. Logfile replay cannot succeed unless all signatures match.

Details
Product: Exchange
Event ID: 457
Source: ESE98
Version: 6.0
Component: Extensible Store Engine
Symbolic Name: EXISTING_LOG_FILE_HAS_BAD_SIGNATURE_ERROR_ID_2
Message: {process name} ({process id}) The log signature of the existing logfile {file name} doesn’t match the logfiles from the backup set. Logfile replay cannot succeed unless all signatures match.
   
Explanation
Mismatched log files have been detected. You are restoring to a recovery server that has a different set of log files.
   
User Action
Before you perform the restore, delete all log files from the recovery server.

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