How To Fix CNV_20100319 - Cyclic changes and/or temporary duplicates

SAP Error Message - Details

• Message type: E = Error

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

• Message number: 319

• Message text: Cyclic changes and/or temporary duplicates

What causes this issue?

<DS:TX.CNV_MBT_CYCLIC_CHANGE>Cyclic changes</> and/or
<DS:TX.CNV_MBT_TEMP_DUPLICATES>temporary duplicates</> may occur.
The following is an example for the affected G/L accounts and/or cost
elements:
Chart of accounts = &V1&, G/L account or cost element = &V2&.
In this specific case, the problem may occur at &V3& segment level.

System Response

Warning
The possible occurrence of cyclic changes and/or temporary duplicates
has an impact on the selected program scenarios.

How to fix this error?

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.

Smart SAP Assistant

• What is the cause and solution for SAP error message CNV_20100319 - Cyclic changes and/or temporary duplicates ?

  The SAP error message CNV_20100319 indicates that there are cyclic changes or temporary duplicates in the data during a data migration or conversion process, typically associated with the SAP S/4HANA migration or data transfer activities. This error is part of the SAP Conversion and Migration tools, particularly in the context of the SAP S/4HANA Migration Cockpit or other data migration scenarios.
  Cause:
  
  Cyclic Changes: This occurs when there are interdependencies in the data that create a loop. For example, if you have a set of records that reference each other in a circular manner, the system cannot resolve the order of processing.
  Temporary Duplicates: This can happen when the same record is being processed multiple times or when there are duplicate entries in the source data that are not handled correctly during the migration process.
  
  Solution:
  
  Data Cleansing: Review the source data for duplicates and cyclic references. Ensure that each record is unique and that there are no circular dependencies.
  Adjust Migration Logic: If you are using a custom migration program or tool, check the logic to ensure it can handle cyclic dependencies. You may need to adjust the order of processing or implement checks to prevent cyclic changes.
  Use SAP Tools: Utilize SAP's built-in tools for data migration, such as the SAP S/4HANA Migration Cockpit, which may have features to help identify and resolve these issues.
  Error Logs: Check the detailed error logs provided by the migration tool. They may give you more specific information about which records are causing the issue.
  Testing: Before running the migration on the entire dataset, conduct tests on smaller subsets of data to identify and resolve issues incrementally.
  
  Related Information:
  
  SAP Notes: Check for any relevant SAP Notes that may address this specific error or provide guidance on best practices for data migration.
  Documentation: Review the official SAP documentation for the migration tools you are using, as they often contain troubleshooting sections for common errors.
  Community Forums: Engage with the SAP Community or forums where other users may have encountered similar issues and can share their solutions.
  
  By addressing the underlying data issues and ensuring that your migration logic is robust, you can resolve the CNV_20100319 error and successfully complete your data migration.