How To Fix CNV_CMIS_A_20204 - Tables &1 doesnot have equal no.of key fields in systems &2 and &3.

SAP Error Message - Details

• Message type: E = Error

• Message class: CNV_CMIS_A_20 - Message class for Cross-Client Customizing Comparison (SLO)

• Message number: 204

• Message text: Tables &1 doesnot have equal no.of key fields in systems &2 and &3.

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message CNV_CMIS_A_20204 - Tables &1 doesnot have equal no.of key fields in systems &2 and &3. ?

  The SAP error message CNV_CMIS_A_20204 indicates that there is a mismatch in the number of key fields for a specific table between two systems during a data migration or conversion process. This error typically arises in the context of SAP's Conversion and Migration tools, such as the SAP S/4HANA Migration Cockpit or other data transfer tools.
  Cause:
  The error occurs when the source system (system &2) and the target system (system &3) have different definitions for the specified table (&1). Specifically, it means that the number of key fields (primary key fields) defined in the table in the source system does not match the number of key fields defined in the target system. This can happen due to:
  
  Different Data Model Versions: The source and target systems may be running different versions of the data model, leading to discrepancies in table definitions.
  Customizations: Custom fields or changes in the table structure in either system can lead to differences in the number of key fields.
  Inconsistent Configuration: Configuration settings or table definitions may not have been consistently applied across systems.
  
  Solution:
  To resolve this error, you can take the following steps:
  
  
  Check Table Definitions: Compare the table definitions in both systems. You can use transaction SE11 (Data Dictionary) to view the structure of the table in both systems and identify the differences in key fields.
  
  
  Adjust Key Fields: If the target system is missing key fields that exist in the source system, you may need to add those fields to the target system. Conversely, if the source system has extra key fields, you may need to adjust the data or the migration logic accordingly.
  
  
  Review Migration Logic: If you are using a migration tool, review the mapping and transformation logic to ensure that it correctly handles the differences in key fields.
  
  
  Consult Documentation: Refer to SAP documentation or notes related to the specific migration or conversion process you are using. There may be specific guidelines or recommendations for handling such discrepancies.
  
  
  Testing: After making adjustments, perform a test migration to ensure that the error is resolved and that data is being transferred correctly.
  
  
  Related Information:
  
  SAP Notes: Check for any relevant SAP Notes that may address this specific error or provide guidance on handling table key field discrepancies.
  Data Migration Tools: Familiarize yourself with the specific data migration tools you are using, as they may have built-in features to help identify and resolve such issues.
  SAP Community: Engage with the SAP Community forums for insights from other users who may have encountered similar issues.
  
  By following these steps, you should be able to identify the cause of the error and implement a solution to resolve it.