How To Fix CNV_20211_CHECK052 - Temporary duplicates possible due to mapping of companies

SAP Error Message - Details

• Message type: E = Error

• Message class: CNV_20211_CHECK - Messages for check functions (company conversion)

• Message number: 052

• Message text: Temporary duplicates possible due to mapping of companies

What causes this issue?

<DS:TX.CNV_MBT_TEMP_DUPLICATES>Temporary duplicates</> possible due to
mapping of the companies.
Example: Company A is renamed into B (mapping: A -> B). Company B is
renamed into C (mapping: B -> C). In this case, temporary duplicates may
occur in the database if company A is converted at a point in time when
company B has not yet been converted. If temporary duplicates are likely
to occur, the conversion programs must be generated in a different way.

System Response

Warning

How to fix this error?

No action is required.
Temporary duplicates do not represent a problem to the transformation
solution. However, temporary duplicates may result in a longer
conversion runtime.

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

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_20211_CHECK052 - Temporary duplicates possible due to mapping of companies ?

  The SAP error message CNV_20211_CHECK052 indicates that there are potential temporary duplicates in the mapping of companies during a data migration or conversion process. This error typically arises in the context of SAP's data migration tools, particularly when using the SAP S/4HANA Migration Cockpit or similar tools.
  Cause:
  The error occurs when the system detects that multiple source records may be mapped to the same target company code or entity. This can happen due to:
  
  Duplicate Source Records: If the source data contains duplicate entries for the same company code or entity, the mapping process may not be able to distinguish between them.
  Incorrect Mapping Configuration: The mapping rules defined for the migration may not be set up correctly, leading to multiple source records being mapped to a single target record.
  Data Quality Issues: Poor data quality in the source system, such as inconsistent naming conventions or missing identifiers, can lead to confusion during the mapping process.
  
  Solution:
  To resolve the CNV_20211_CHECK052 error, you can take the following steps:
  
  Review Source Data: Check the source data for duplicates. Ensure that each company code or entity is unique and correctly defined.
  Adjust Mapping Rules: Review the mapping configuration in the migration tool. Ensure that the mapping rules are set up to handle unique identifiers properly and that they align with the target system's requirements.
  Data Cleansing: Perform data cleansing on the source data to eliminate duplicates and ensure consistency. This may involve merging records, correcting naming conventions, or filling in missing data.
  Test Mapping: After making adjustments, run a test migration to see if the error persists. Monitor the logs for any additional issues that may arise.
  Consult Documentation: Refer to SAP's official documentation or notes related to the specific migration tool you are using for any additional guidance or best practices.
  
  Related Information:
  
  SAP Notes: Check for any relevant SAP Notes that may provide additional insights or fixes related to this error.
  Migration Cockpit: Familiarize yourself with the SAP S/4HANA Migration Cockpit and its functionalities, as it provides tools for data mapping and transformation.
  Data Migration Best Practices: Review best practices for data migration in SAP environments, which can help prevent similar issues in the future.
  
  By addressing the root causes of the error and ensuring that your mapping and source data are correctly configured, you should be able to resolve the CNV_20211_CHECK052 error effectively.