How To Fix CNV_20900074 - The scenario is N:1 merge of vendor numbers

SAP Error Message - Details

• Message type: E = Error

• Message class: CNV_20900 - Message class for package CNV_20900

• Message number: 074

• Message text: The scenario is N:1 merge of vendor numbers

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message CNV_20900074 - The scenario is N:1 merge of vendor numbers ?

  The SAP error message CNV_20900074, which pertains to the scenario of N:1 merge of vendor numbers, typically occurs during data migration or data transformation processes, particularly when using SAP's data migration tools like the SAP S/4HANA Migration Cockpit or similar tools.
  Cause:
  The error CNV_20900074 indicates that there is an issue with merging multiple vendor numbers into a single vendor number. This can happen due to several reasons, including:
  
  
  Data Inconsistencies: The vendor records being merged may have conflicting or inconsistent data, such as different addresses, payment terms, or other attributes that cannot be reconciled automatically.
  
  
  Missing Mapping: There may be a lack of proper mapping between the vendor numbers being merged, leading to ambiguity in how the data should be consolidated.
  
  
  Business Rules Violations: The merge operation may violate certain business rules or constraints defined in the system, such as unique constraints on certain fields.
  
  
  Configuration Issues: There may be configuration settings in the SAP system that are not aligned with the merge operation being attempted.
  
  
  Solution:
  To resolve the CNV_20900074 error, you can follow these steps:
  
  
  Review Data: Check the vendor records that are being merged for inconsistencies. Ensure that the data is clean and that there are no conflicting entries.
  
  
  Mapping Verification: Ensure that there is a clear and correct mapping for the vendor numbers being merged. This includes verifying that all necessary fields are accounted for in the mapping process.
  
  
  Business Rules Compliance: Review the business rules and constraints in your SAP system to ensure that the merge operation complies with them. Adjust the data or the merge strategy as necessary.
  
  
  Use of Tools: Utilize SAP tools or transaction codes designed for data migration and merging, such as the Data Migration Workbench or LSMW (Legacy System Migration Workbench), to facilitate the process and ensure that all necessary checks are in place.
  
  
  Testing: Before performing the merge in a production environment, conduct thorough testing in a development or quality assurance environment to identify any potential issues.
  
  
  Consult Documentation: Refer to SAP documentation or notes related to the specific version of SAP you are using for any additional guidance or known issues related to vendor merging.
  
  
  Seek Support: If the issue persists, consider reaching out to SAP support or consulting with an SAP expert who can provide more tailored assistance based on your specific scenario.
  
  
  Related Information:
  
  SAP Notes: Check for any relevant SAP Notes that may address this specific error or provide additional context.
  Data Migration Best Practices: Familiarize yourself with best practices for data migration in SAP, which can help prevent similar issues in the future.
  Community Forums: Engage with SAP community forums or user groups where similar issues may have been discussed, and solutions shared.
  
  By following these steps, you should be able to identify the root cause of the CNV_20900074 error and implement a suitable solution.