How To Fix CNV20400207 - Field &1-&2 in CNVFIELDS for merge, but &1 does not exist in CNVTABLES

SAP Error Message - Details

• Message type: E = Error

• Message class: CNV20400 - Message class CNV20400

• Message number: 207

• Message text: Field &1-&2 in CNVFIELDS for merge, but &1 does not exist in CNVTABLES

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message CNV20400207 - Field &1-&2 in CNVFIELDS for merge, but &1 does not exist in CNVTABLES ?

  The SAP error message CNV20400207 typically occurs during a data migration or conversion process using the SAP Landscape Transformation (SLT) or SAP Data Services. This error indicates that there is a mismatch between the fields defined in the conversion mapping and the actual tables in the database.
  Cause:
  The error message states that a field (denoted as &1-&2) is referenced in the CNVFIELDS table for a merge operation, but the corresponding table (denoted as &1) does not exist in the CNVTABLES table. This can happen due to several reasons:
  
  Missing Table Definition: The table that is supposed to contain the field is not defined in the CNVTABLES table.
  Incorrect Configuration: There may be a configuration issue where the mapping is pointing to a non-existent or incorrectly named table.
  Data Model Changes: If there have been changes to the data model (e.g., tables being renamed or removed), the mappings may not have been updated accordingly.
  Transport Issues: If the configuration was transported from one system to another, some objects may not have been transported correctly.
  
  Solution:
  To resolve this error, you can follow these steps:
  
  
  Check CNVTABLES: Verify that the table &1 exists in the CNVTABLES table. If it does not exist, you may need to create it or correct the mapping.
  
  
  Review CNVFIELDS: Look at the CNVFIELDS table to see the field definitions and ensure that they are correctly mapped to existing tables.
  
  
  Update Mappings: If the table has been renamed or removed, update the mappings in the CNVFIELDS table to point to the correct table.
  
  
  Consistency Check: Perform a consistency check on your migration project to identify any other potential issues.
  
  
  Consult Documentation: Refer to the SAP documentation for the specific migration tool you are using (e.g., SAP S/4HANA Migration Cockpit, SAP Data Services) for guidance on how to properly configure the mappings.
  
  
  Contact SAP Support: If you are unable to resolve the issue, consider reaching out to SAP support for assistance, especially if this is a production environment.
  
  
  Related Information:
  
  Transaction Codes: You may use transaction codes like SE11 (Data Dictionary) to check the definitions of tables and fields.
  Migration Tools: Familiarize yourself with the specific migration tool you are using, as each may have its own set of best practices and troubleshooting steps.
  SAP Notes: Check for any relevant SAP Notes that may address this specific error or provide additional context.
  
  By following these steps, you should be able to identify the root cause of the error and implement a solution to resolve it.