Overview
The NoRule folder stores files that do not match the file extensions defined in the TM Master database receive rules. These rules can be found under:
System → TM Exchange Client → Receive Rules (per installation)
If a file placed in the COMM folder does not meet the expected extension criteria, it will not be imported and will instead be moved automatically to the NoRule folder.
Supported File Extensions
For a file to be successfully imported, it must match one of the following supported replication file extensions (depending on which database is processing the import):
.o2u.u2o.ofu.ufo
Any other file type detected in the COMM folder will be rejected and transferred to the NoRule folder.
Common Cause: Document Split Files
The files placed in the NoRule folder are often related to the splitting of document files.
This behaviour is most commonly observed on office installations, but it can also occur on vessel servers.
How File Splitting Works (TM Exchange)
This behaviour is controlled by the Max File Size setting:
System → TM Exchange Client → Settings → Max File Size
Example Scenario
Max file size is set to 1 MB
A replication file of 10 MB exists in the COMM folder
Result
TM Exchange will automatically:
Split the 10 MB file into 10 individual 1 MB parts
Send the split files to the destination system
Reassemble the files back into a single 10 MB replication file on arrival
If the reassembly process does not complete successfully, the individual split files may appear in the COMM folder and eventually be moved to the NoRule folder due to invalid file extensions.
Document Resend Interval
Each database also has a configurable Document Resend Interval setting.
Default Setting
4 days (can be adjusted per installation)
Behaviour
If the receiving database does not successfully import a document within the configured resend interval:
The source database will resend the document
This retry process will continue until the document is successfully received
Once imported, the document is marked as complete and resend attempts stop
Recommendations
To prevent repeated NoRule folder entries and replication issues, verify the following on all installations:
Max File Size setting is appropriate and consistent
Document Resend Interval is correctly configured
TM Exchange receive rules are properly set
Network stability and replication performance are adequate
Important Note About NoRule Files
Once files are placed in the NoRule folder:
They are no longer used by the system
They will not be reprocessed or reimported
They can be safely archived or removed after investigation
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