How To Fix MDG_BS_MAT_DATA_REP021 - Key mapping is created between material ID &1 and material ID &2

SAP Error Message - Details

• Message type: E = Error

• Message class: MDG_BS_MAT_DATA_REP -

• Message number: 021

• Message text: Key mapping is created between material ID &1 and material ID &2

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message MDG_BS_MAT_DATA_REP021 - Key mapping is created between material ID &1 and material ID &2 ?

  The SAP error message MDG_BS_MAT_DATA_REP021 indicates that there is a key mapping conflict between two material IDs in the Master Data Governance (MDG) system. This typically occurs when you are trying to create or update a material record, and the system detects that there is already a mapping established between the two specified material IDs.
  Cause:
  
  Duplicate Mapping: The error arises when there is an attempt to create a new key mapping for material IDs that are already mapped to each other.
  Data Consistency Issues: This can happen if there are inconsistencies in the data being processed, such as trying to create a mapping that already exists in the system.
  Incorrect Data Entry: Users may inadvertently attempt to create a mapping that is already present due to manual data entry errors.
  
  Solution:
  
  
  Check Existing Mappings: Review the existing key mappings in the system to confirm whether the mapping between the two material IDs already exists. You can do this by navigating to the relevant transaction or using the MDG application to view key mappings.
  
  
  Avoid Duplicate Creation: If the mapping already exists, you should avoid trying to create it again. Instead, you can proceed with the existing mapping or update the relevant material data as needed.
  
  
  Data Correction: If you find that the mapping is incorrect or needs to be updated, you may need to delete the existing mapping (if applicable) and then create a new one with the correct details.
  
  
  Consult Documentation: Refer to the SAP documentation or help resources for guidance on managing key mappings in MDG. This can provide insights into best practices and procedures.
  
  
  Contact Support: If you are unable to resolve the issue, consider reaching out to your SAP support team or consulting with an SAP expert who can provide assistance based on your specific system configuration and data.
  
  
  Related Information:
  
  MDG Configuration: Understanding how key mappings are configured in your MDG system can help prevent such issues in the future.
  Material Master Data Management: Familiarize yourself with the processes and best practices for managing material master data in SAP MDG.
  Transaction Codes: Familiarize yourself with relevant transaction codes (like MDG_MAT) that can help you navigate the MDG environment effectively.
  
  By following these steps, you should be able to address the error message and ensure that your material data management processes run smoothly.