How To Fix MDG_BS_ECC_SERVICE020 - Document type & only allows a 1:n assignment to &

SAP Error Message - Details

• Message type: E = Error

• Message class: MDG_BS_ECC_SERVICE -

• Message number: 020

• Message text: Document type & only allows a 1:n assignment to &

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.

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Smart SAP Assistant

• What is the cause and solution for SAP error message MDG_BS_ECC_SERVICE020 - Document type & only allows a 1:n assignment to & ?

  The SAP error message MDG_BS_ECC_SERVICE020 typically occurs in the context of Master Data Governance (MDG) when there is an issue with the assignment of document types in the system. This error indicates that the document type specified in the message only allows a one-to-many (1:n) assignment to a particular entity, but the system is trying to perform an operation that violates this constraint.
  Cause:
  
  
  Document Type Configuration: The document type you are trying to use may be configured in such a way that it only allows a single assignment to a specific entity (e.g., a business partner, material, etc.). This means that for the given document type, you cannot have multiple entries or assignments to the same entity.
  
  
  Data Model Issues: There may be inconsistencies or misconfigurations in the data model that lead to this error. For example, if the data model expects a certain relationship between entities and the document type, but the data being processed does not conform to this expectation, the error will occur.
  
  
  Duplicate Entries: If there are already existing entries that conflict with the new assignment you are trying to make, this can trigger the error.
  
  
  Solution:
  
  
  Check Document Type Configuration: Review the configuration of the document type in the SAP system. Ensure that it is set up correctly for the intended use case. You may need to adjust the settings to allow for the desired assignments.
  
  
  Review Data Model: Examine the data model and the relationships defined for the entities involved. Ensure that the data being processed adheres to the expected structure and relationships.
  
  
  Eliminate Duplicates: Check for any existing entries that may conflict with the new assignment. If duplicates are found, you may need to remove or modify them to resolve the conflict.
  
  
  Consult Documentation: Refer to SAP documentation or help resources for specific guidance on the document type and its constraints. This can provide insights into how to properly configure or use the document type.
  
  
  Debugging: If you have access to the development environment, you can debug the process to identify the exact point of failure and gather more information about the data being processed.
  
  
  Contact SAP Support: If the issue persists and you cannot find a resolution, consider reaching out to SAP support for assistance. They can provide more detailed insights based on your specific system configuration and usage.
  
  
  Related Information:
  
  SAP Notes: Check for any relevant SAP Notes that may address this specific error or provide updates and patches that could resolve the issue.
  Community Forums: Engage with SAP community forums or user groups where similar issues may have been discussed. Other users may have encountered the same error and can share their solutions.
  Training and Documentation: Ensure that users involved in data governance are trained on the proper use of document types and the implications of their configurations.
  
  By following these steps, you should be able to identify the cause of the error and implement a solution to resolve it.