How To Fix CNV_20100090 - No cyclic changes and no temporary duplicates can occur

SAP Error Message - Details

• Message type: E = Error

• Message class: CNV_20100 - Messageclass for chart of account conversion

• Message number: 090

• Message text: No cyclic changes and no temporary duplicates can occur

What causes this issue?

No <DS:TX.CNV_MBT_CYCLIC_CHANGE>cyclic changes</> and no
<DS:TX.CNV_MBT_TEMP_DUPLICATES>temporary duplicates</> can occur.

System Response

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

How to fix this error?

Procedure for System Administrators

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message CNV_20100090 - No cyclic changes and no temporary duplicates can occur ?

  The SAP error message CNV_20100090 indicates that there are issues related to cyclic changes or temporary duplicates in the context of data migration or conversion processes, particularly when using the SAP S/4HANA Migration Cockpit or similar tools.
  Cause:
  
  
  Cyclic Changes: This occurs when there are interdependencies in the data that create a loop. For example, if you have a situation where the change in one record depends on another record, which in turn depends on the first record, it creates a cycle that cannot be resolved.
  
  
  Temporary Duplicates: This refers to situations where the same data is being processed multiple times in a way that creates duplicates, which can lead to inconsistencies and errors during the migration process.
  
  
  Solution:
  
  
  Review Data Relationships: Analyze the data relationships and dependencies to identify any cyclic dependencies. Ensure that the data is structured in a way that does not create cycles.
  
  
  Data Cleansing: Before migration, clean the data to remove any duplicates or inconsistencies. This may involve deduplication processes or ensuring that records are unique.
  
  
  Adjust Migration Logic: If you are using a custom migration logic or transformation, review the logic to ensure that it does not inadvertently create cycles or temporary duplicates.
  
  
  Use Staging Tables: Consider using staging tables to temporarily hold data during the migration process. This can help in managing dependencies and ensuring that data is processed in the correct order.
  
  
  Consult Documentation: Refer to the SAP documentation related to the specific migration tool you are using. There may be specific guidelines or best practices for handling such errors.
  
  
  Testing: Conduct thorough testing of the migration process with a subset of data to identify and resolve any issues before performing a full migration.
  
  
  Related Information:
  
  SAP Notes: Check for any relevant SAP Notes that may address this specific error or provide additional guidance on handling cyclic changes and duplicates.
  Migration Cockpit: Familiarize yourself with the features and limitations of the SAP S/4HANA Migration Cockpit, as it may have specific settings or configurations that can help mitigate these issues.
  Community Forums: Engage with the SAP community forums or support channels to see if others have encountered similar issues and what solutions they have implemented.
  
  By addressing the underlying causes of the error and following the suggested solutions, you should be able to resolve the CNV_20100090 error and successfully complete your data migration.