The Sync log, located in the logs directory (<server-root>/logs/sync), provides useful troubleshooting information on the type of operation that was processed or completed. Most log entries provide the following common elements in their messages:

Sync log element Description
category Indicates the type of operation, which will always by SYNC.
severity Indicates the severity type of the message: INFORMATION, MILD_WARNING, SEVERE_WARNING, MILD_ERROR, SEVERE_ ERROR, FATAL_ERROR, DEBUG, or NOTICE.
msgID Specifies the unique ID number assigned to the message.
op Specifies the operation number specific to PingDataSync Server.
changeNumber Specifies the change number from the source server assigned to the modification.
replicationCSN Specifies the replication change sequence number from the source server.
replicaID Specifies the replica ID from the source server if there are multiple backend databases.
pipe Specifies the Sync Pipe that was used for this operation.
msg Displays the result of this operation.