How To Fix MDG_BS_ECC_SUPPLIER020 - Key mapping between supplier &1 and identical &2 will be created

SAP Error Message - Details

• Message type: E = Error

• Message class: MDG_BS_ECC_SUPPLIER - Master Data Processes ECC Supplier

• Message number: 020

• Message text: Key mapping between supplier &1 and identical &2 will be created

What causes this issue?

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

System Response

The supplier data will not be overwritten or merged by the data of the
exported supplier.

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_ECC_SUPPLIER020 - Key mapping between supplier &1 and identical &2 will be created ?

  The SAP error message MDG_BS_ECC_SUPPLIER020 indicates that there is a key mapping issue between a supplier and an identical entity in the system. This typically occurs in the context of Master Data Governance (MDG) for suppliers when there is a need to establish a relationship between a supplier record and another entity that is considered identical (e.g., a vendor or customer record).
  Cause:
  The error message is triggered when the system detects that there is a need to create a key mapping between a supplier and another entity that has the same attributes or identifiers. This can happen due to:
  
  Duplicate Records: There may be duplicate supplier records in the system that need to be reconciled.
  Data Migration Issues: During data migration or integration processes, the system may find that the same supplier is represented in multiple ways.
  Configuration Issues: The configuration settings for key mapping in the MDG system may not be set up correctly, leading to conflicts.
  
  Solution:
  To resolve this error, you can take the following steps:
  
  
  Review Duplicate Records: Check for duplicate supplier records in the system. If duplicates exist, determine which record should be the primary one and merge or delete the unnecessary duplicates.
  
  
  Create Key Mapping: If the system is prompting to create a key mapping, you may need to manually create the mapping between the supplier and the identical entity. This can usually be done through the MDG application interface.
  
  
  Check Configuration: Review the configuration settings related to key mapping in your MDG system. Ensure that the settings are correctly defined to handle supplier mappings.
  
  
  Data Quality Checks: Implement data quality checks to prevent duplicates and ensure that supplier data is consistent across the system.
  
  
  Consult Documentation: Refer to SAP documentation or notes related to MDG and supplier management for specific guidance on handling key mapping issues.
  
  
  Engage with SAP Support: If the issue persists, consider reaching out to SAP support for assistance, especially if it involves complex configurations or custom developments.
  
  
  Related Information:
  
  MDG Configuration: Understanding the configuration settings for MDG can help in managing supplier data effectively.
  Data Governance: Implementing data governance practices can help maintain data integrity and prevent issues related to duplicates.
  SAP Notes: Check for any relevant SAP Notes that may address this specific error or provide additional troubleshooting steps.
  
  By following these steps, you should be able to resolve the MDG_BS_ECC_SUPPLIER020 error and establish the necessary key mappings for your supplier records.