How To Fix MDG_BS_BP_DATAREPL021 - Fatal error when processing the relationship &3 &4 of &1 and &2

SAP Error Message - Details

• Message type: E = Error

• Message class: MDG_BS_BP_DATAREPL - Messages for Business Partner Data Replication

• Message number: 021

• Message text: Fatal error when processing the relationship &3 &4 of &1 and &2

What causes this issue?

During the bulk inbound processing for business partner relationships
checks are applied. If possible, errors found for a single business
partner relationship are passed to 'Forward Error Handling' . Such
errors do not imply a complete rollback of the bulk message.
Reprocessing for the faulty business partner relationship is possible
with the Postprocessing Desktop.
However some erros which are found at a very late stage of inbound
processing cannot be handled with Forward Error Handling. They result in
a complete ROLLBACK of the processing to ensure data consistency.

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 MDG_BS_BP_DATAREPL021 - Fatal error when processing the relationship &3 &4 of &1 and &2 ?

  The SAP error message MDG_BS_BP_DATAREPL021 typically occurs in the context of Master Data Governance (MDG) when there is a problem processing relationships between business partners (BPs) during data replication or synchronization. The error message indicates a "fatal error" when processing a specific relationship between two business partners.
  Cause:
  The error can be caused by several factors, including but not limited to:
  
  
  Data Inconsistencies: There may be inconsistencies in the data of the business partners involved, such as missing mandatory fields or incorrect data formats.
  
  
  Relationship Configuration Issues: The relationship type being processed may not be correctly configured in the system, or it may not be valid for the business partners involved.
  
  
  Authorization Issues: The user or process attempting to replicate the data may not have the necessary authorizations to perform the operation.
  
  
  Technical Issues: There could be underlying technical issues, such as problems with the database, network issues, or issues with the MDG configuration.
  
  
  Custom Logic: If there are custom enhancements or logic implemented in the MDG process, they may be causing the error.
  
  
  Solution:
  To resolve the error, you can follow these steps:
  
  
  Check Data Consistency:
  
  Review the data of the business partners involved in the relationship. Ensure that all mandatory fields are filled and that the data is in the correct format.
  
  
  
  Review Relationship Configuration:
  
  Check the configuration of the relationship type in the MDG settings. Ensure that it is correctly defined and valid for the business partners involved.
  
  
  
  Authorization Check:
  
  Verify that the user or process has the necessary authorizations to perform the replication. Check the roles and authorizations assigned to the user.
  
  
  
  Analyze Logs:
  
  Check the application logs (transaction SLG1) for more detailed error messages or warnings that can provide additional context about the issue.
  
  
  
  Debugging:
  
  If you have access to the development environment, consider debugging the replication process to identify where the error occurs.
  
  
  
  Consult Documentation:
  
  Review SAP documentation or notes related to the specific error message for any known issues or patches that may address the problem.
  
  
  
  Contact SAP Support:
  
  If the issue persists after trying the above steps, consider reaching out to SAP Support for further assistance. Provide them with the error message details and any relevant logs.
  
  
  
  Related Information:
  
  Transaction Codes: You may want to use transaction codes like BP (Business Partner), SLG1 (Application Log), and MDGIMG (MDG Implementation Guide) to investigate further.
  SAP Notes: Search for relevant SAP Notes in the SAP Support Portal that may address this specific error or provide guidance on similar issues.
  Community Forums: Consider checking SAP Community forums or other user groups for discussions related to this error, as other users may have encountered and resolved similar issues.
  
  By following these steps, you should be able to identify the root cause of the error and implement a solution.