How To Fix CNV20551640 - Relevant material numbers must be determined before material classes

SAP Error Message - Details

• Message type: E = Error

• Message class: CNV20551 - message for package 20551 (company code delete)

• Message number: 640

• Message text: Relevant material numbers must be determined before material classes

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message CNV20551640 - Relevant material numbers must be determined before material classes ?

  The SAP error message CNV20551640, which states "Relevant material numbers must be determined before material classes," typically occurs during data migration or conversion processes, particularly when using the SAP S/4HANA Migration Cockpit or similar tools. This error indicates that the system is unable to determine the relevant material numbers before it can classify them into material classes.
  Cause:
  
  Missing Material Numbers: The relevant material numbers may not have been defined or are missing in the source data.
  Incorrect Mapping: There may be an issue with the mapping of material numbers to material classes in the migration settings.
  Data Structure Issues: The data structure or format of the incoming data may not align with the expected structure in SAP.
  Sequence of Operations: The process may be attempting to classify materials before the system has had a chance to identify or create the material numbers.
  
  Solution:
  
  Check Source Data: Ensure that the source data contains all necessary material numbers. Validate that the data is complete and correctly formatted.
  Review Mapping Configuration: Go through the mapping configuration in the migration tool to ensure that material numbers are correctly mapped to their respective classes.
  Adjust Migration Sequence: If applicable, adjust the sequence of operations in the migration process to ensure that material numbers are determined before material classes.
  Data Validation: Use data validation tools or scripts to check for inconsistencies or missing entries in the material data.
  Consult Documentation: Refer to SAP documentation or guides related to the specific migration tool you are using for any additional configuration steps or requirements.
  Error Logs: Check the error logs for more detailed information about the failure, which can provide insights into what specifically went wrong.
  
  Related Information:
  
  SAP Notes: Look for relevant SAP Notes that may address this specific error or provide additional troubleshooting steps.
  SAP Community: Engage with the SAP Community forums to see if other users have encountered and resolved similar issues.
  Migration Cockpit Documentation: Review the official SAP documentation for the Migration Cockpit or the specific tool you are using for any prerequisites or configuration settings that may have been overlooked.
  
  By following these steps, you should be able to identify the root cause of the error and implement a solution to resolve it.