Source:  FILESYS.NLM

Possible Cause:  The Transaction Tracking System (TTS) probably disabled itself because it failed to generate records to be written to a file. This failure occurred when TTS could not read the backout file for some reason. The problem could be a hardware failure, a power failure, or a corrupted file.

Action:  See "Disk Errors in the Server Operating System Administration Guide. If you suspect file corruption, delete the file and restore from a backup.