How To Fix WRF_UPGRADE_MSG021 - Plant &1: Error while mapping the data of customer &2 to BP structures &4

SAP Error Message - Details

• Message type: E = Error

• Message class: WRF_UPGRADE_MSG -

• Message number: 021

• Message text: Plant &1: Error while mapping the data of customer &2 to BP structures &4

Self-Explanatory Message

Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of messages in the SAP system have a message text, however this is frequently insufficient to comprehend or resolve the problem.

To make things easier, more detailed information is frequently added to describe the issue, how to fix it, and the necessary steps or configuration modifications.

Unfortunately, there isn't any extra information in this error notice.

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Smart SAP Assistant

• What is the cause and solution for SAP error message WRF_UPGRADE_MSG021 - Plant &1: Error while mapping the data of customer &2 to BP structures &4 ?

  The SAP error message WRF_UPGRADE_MSG021 typically occurs during the process of data migration or upgrade, particularly when mapping customer data to Business Partner (BP) structures. This error indicates that there is an issue with the mapping of customer data for a specific plant and customer combination.
  Cause:
  
  Data Inconsistency: The customer data being migrated may have inconsistencies or missing information that prevents it from being correctly mapped to the Business Partner structures.
  Configuration Issues: There may be configuration issues in the system that affect how customer data is mapped to BPs.
  Custom Code or Enhancements: If there are custom developments or enhancements in the system, they may interfere with the standard mapping process.
  Missing or Incorrect Master Data: The required master data for the customer or plant may be missing or incorrectly set up.
  
  Solution:
  
  Check Data Consistency: Review the customer data for the specified customer and plant. Ensure that all required fields are populated and that there are no inconsistencies.
  Review Mapping Configuration: Check the configuration settings for the mapping of customer data to Business Partner structures. Ensure that the mapping is correctly set up in the system.
  Analyze Logs: Look at the detailed logs generated during the migration or upgrade process. These logs may provide more specific information about what went wrong.
  Custom Code Review: If there are any custom developments, review the code to ensure it is not causing the issue. You may need to temporarily disable custom code to see if the error persists.
  Data Migration Tools: If you are using data migration tools (like LSMW or SAP S/4HANA Migration Cockpit), ensure that the mapping templates are correctly configured.
  Consult SAP Notes: Check the SAP Support Portal for any relevant SAP Notes that may address this specific error message or provide guidance on similar issues.
  Testing: After making changes, conduct thorough testing to ensure that the mapping works correctly and that the error does not reoccur.
  
  Related Information:
  
  SAP Business Partner (BP): Understand the structure and requirements of Business Partner data in SAP, as this is crucial for successful mapping.
  Data Migration Best Practices: Familiarize yourself with best practices for data migration in SAP, especially when transitioning from customer master data to Business Partner structures.
  SAP Community and Forums: Engage with the SAP Community or relevant forums to see if other users have encountered similar issues and what solutions they found effective.
  
  If the issue persists after trying the above solutions, it may be beneficial to reach out to SAP Support for further assistance.