22/08/2022 12:39:26 AM :: Failed to pre-process the job Error: Agent: Failed to process method {Transform.Patch}: A data integrity checksum error occurred. Data in the file stream is corrupt.
Failed to write data to the file [Z:\Backups\XXXXXX.vbk].

The exact error message: Failed to perform backup file verification Error: A data integrity checksum error occurred. Data in the file stream

Solution 

Corruption on disk , rerun active full. You may need to remove the old VBK and start a new chain