How To Fix CNV20201451 - Only changed numbers are logged

CNV20201451 - Overview

• Message type: E = Error

• Message class: CNV20201 -

• Message number: 451

• Message text: Only changed numbers are logged

All renumberings are logged.
However only the documents that get a new document number are listed in
the log.
If the document number does not change, no entry is written to the log
table!
You can find the log for a test run in table CNV_20201_TRACKT and the
log for the update run in table CNV_20201_TRACK.
Renumbering here means renumbering of document numbers or other number
range objects.

What causes this issue?

The system issues an error message and will not allow you to continue with this transaction until the error is resolved.

System Response

How to fix this error?

Error message extract from SAP system. Copyright SAP SE.

CNV20201451 - Details

• The SAP error message CNV20201451, which states "Only changed numbers are logged," typically occurs in the context of data migration or data transformation processes, particularly when using SAP's data migration tools or during the execution of certain programs that involve number ranges or number assignments.
  
  Cause:
  This error message usually indicates that the system is configured to log only changes to number ranges or number assignments, and no changes were detected during the operation you were attempting to perform. This can happen in scenarios where:
  
  No Changes Made: The operation you executed did not result in any changes to the data, hence there is nothing to log.
  Configuration Settings: The logging settings in the system may be configured to log only changes, which means if the data remains the same, no log entry will be created.
  Data Migration Process: During data migration, if the source data is identical to the target data, the system will