How To Fix CNV20305351 - Cycle merge is not supported.

CNV20305351 - Overview

• Message type: E = Error

• Message class: CNV20305 - Messages for conversion packages in CO

• Message number: 351

• Message text: Cycle merge is not supported.

What causes this issue?

A merge of cycles is not supported as part of a controlling area merge.
Cycles which exist in the controlling areas which are to be merged must
be given a unique name in the mapping table.

System Response

When checking the mapping table, the system found that in the
controlling areas which are to be merged, there are cycles which would
be given the same name during conversion, which means that these cycles
would be merged.

How to fix this error?

Please check the mapping table for cycles and give all cycles unique
names.

Procedure for System Administrators

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

Error message extract from SAP system. Copyright SAP SE.

CNV20305351 - Details

• The SAP error message CNV20305351: Cycle merge is not supported typically occurs during data migration or transformation processes, particularly when using SAP's data migration tools or during system conversions. This error indicates that there is a cycle in the data relationships that the system cannot resolve, which prevents the merging of data records.
  
  Cause:
  
  Cyclic Relationships: The most common cause of this error is the presence of cyclic relationships in the data model. For example, if you have a hierarchy or a set of linked records that refer back to themselves, the system cannot determine the correct order to process these records.
  Data Integrity Issues: There may be issues with the integrity of the data, such as incorrect foreign key relationships or missing references that create cycles.
  
  Configuration Issues: Sometimes, the configuration of the migration tool or the settings in the SAP system can lead to this error if they do not properly handle