How To Fix CNV_PE_S4020 - Base UOMs are different in Source and Target systems

SAP Error Message - Details

• Message type: E = Error

• Message class: CNV_PE_S4 - Messages for Posting Engine S/4 Content

• Message number: 020

• Message text: Base UOMs are different in Source and Target systems

Self-Explanatory Message

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• What is the cause and solution for SAP error message CNV_PE_S4020 - Base UOMs are different in Source and Target systems ?

  The SAP error message CNV_PE_S4020 indicates that there is a mismatch in the Base Unit of Measure (UOM) between the source and target systems during a data migration or conversion process. This error typically arises in scenarios involving data transfer, such as during a system upgrade, data migration, or when using SAP's Conversion Tools.
  Cause:
  The primary cause of this error is that the Base UOM defined for a material or product in the source system does not match the Base UOM defined for the same material or product in the target system. This can happen due to:
  
  Different UOM Configurations: The source and target systems may have different configurations for the same material, leading to discrepancies in the Base UOM.
  Data Migration Issues: During data migration, if the mapping of UOMs is not correctly defined, it can lead to mismatches.
  Custom UOMs: If custom UOMs are used in one system and not in the other, this can also lead to this error.
  
  Solution:
  To resolve the CNV_PE_S4020 error, you can follow these steps:
  
  
  Check UOM Configuration:
  
  Verify the Base UOM settings in both the source and target systems. Ensure that they are consistent for the materials in question.
  Use transaction codes like MM03 (Display Material) to check the UOM settings for specific materials.
  
  
  
  Adjust UOM Mapping:
  
  If you are using a data migration tool, check the mapping configuration for UOMs. Ensure that the Base UOM in the source system is correctly mapped to the Base UOM in the target system.
  
  
  
  Update UOM in Target System:
  
  If necessary, update the Base UOM in the target system to match the source system. This may involve creating new UOMs or adjusting existing ones.
  
  
  
  Data Validation:
  
  Before running the migration again, validate the data to ensure that all UOMs are correctly defined and mapped.
  
  
  
  Consult Documentation:
  
  Refer to SAP documentation or notes related to the specific migration tool you are using for any additional guidance or best practices.
  
  
  
  Testing:
  
  After making the necessary adjustments, perform a test migration to ensure that the error does not occur again.
  
  
  
  Related Information:
  
  SAP Notes: Check for any relevant SAP Notes that may provide additional insights or solutions for this specific error.
  Migration Tools: Familiarize yourself with the specific migration tools being used (e.g., SAP S/4HANA Migration Cockpit, SAP Data Services) as they may have specific requirements or configurations for UOMs.
  Material Master Data: Understanding how material master data is structured in both systems can help in troubleshooting UOM-related issues.
  
  By following these steps, you should be able to resolve the CNV_PE_S4020 error and ensure a successful data migration or conversion process.