The checksum function used by the merge process to perform data validation on article '%1' returned an invalid checksum value. When troubleshooting, use SQL Profiler or restart the agent with a higher value for -HistoryVerboseLevel and check the output log file for errors. Correct any database engine conditions that may be causing the checksum operation to fail.
A stored procedure returned a NULL or 0 value for the checksum. This could have been caused by a server error.
Look for other errors raised by the server. Correct any Database Engine conditions that might cause the checksum operation to fail.