How To Fix CNV20200295 - No suitable unique secondary index found for table &1

SAP Error Message - Details

• Message type: E = Error

• Message class: CNV20200 - Messages for development class CNV_20200

• Message number: 295

• Message text: No suitable unique secondary index found for table &1

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message CNV20200295 - No suitable unique secondary index found for table &1 ?

  The SAP error message CNV20200295 indicates that there is no suitable unique secondary index found for a specific table in the context of data migration or conversion processes, particularly when using the SAP S/4HANA Migration Cockpit or similar tools.
  Cause:
  This error typically arises when:
  
  Missing Unique Index: The table in question does not have a unique secondary index defined, which is required for the data migration process to ensure data integrity and avoid duplicates.
  Data Model Changes: The data model may have changed, and the expected unique index is no longer present.
  Custom Tables: If the table is a custom table, it may not have been designed with the necessary unique constraints.
  
  Solution:
  To resolve this error, you can take the following steps:
  
  
  Check Table Definition:
  
  Use transaction code SE11 (Data Dictionary) to check the definition of the table mentioned in the error message.
  Look for existing indexes and verify if there is a unique secondary index defined.
  
  
  
  Create a Unique Secondary Index:
  
  If a unique secondary index is missing, you may need to create one. This can be done in SE11:
  
  Go to the Indexes tab and create a new index.
  Ensure that the fields included in the index can uniquely identify records in the table.
  
  
  
  
  
  Review Data:
  
  Ensure that the data in the table does not contain duplicates for the fields that you plan to include in the unique index. If duplicates exist, you will need to resolve them before creating the index.
  
  
  
  Consult Documentation:
  
  Review SAP documentation or notes related to the specific migration or conversion process you are performing. There may be specific requirements or recommendations for the tables involved.
  
  
  
  Testing:
  
  After making changes, test the migration process again to see if the error persists.
  
  
  
  Seek Help from SAP Support:
  
  If you are unable to resolve the issue, consider reaching out to SAP Support for assistance, especially if this is part of a larger migration project.
  
  
  
  Related Information:
  
  Transaction Codes: SE11 (Data Dictionary), SE14 (Database Utility), SE80 (Object Navigator).
  SAP Notes: Check for any relevant SAP Notes that might address this specific error or provide guidance on data migration best practices.
  Migration Cockpit: Familiarize yourself with the SAP S/4HANA Migration Cockpit and its requirements for data migration, including index requirements.
  
  By following these steps, you should be able to identify the cause of the error and implement a solution to resolve it.