How To Fix CNV757 - Index & for table & could not be created.

SAP Error Message - Details

• Message type: E = Error

• Message class: CNV - Conversion: Messages for Conversion Services (CNCC)

• Message number: 757

• Message text: Index & for table & could not be created.

Self-Explanatory Message

Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of messages in the SAP system have a message text, however this is frequently insufficient to comprehend or resolve the problem.

To make things easier, more detailed information is frequently added to describe the issue, how to fix it, and the necessary steps or configuration modifications.

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Smart SAP Assistant

• What is the cause and solution for SAP error message CNV757 - Index & for table & could not be created. ?

  The SAP error message "CNV757 Index & for table & could not be created" typically occurs during data migration or conversion processes, particularly when using the SAP S/4HANA Migration Cockpit or other data migration tools. This error indicates that the system encountered an issue while trying to create an index for a specific database table.
  Causes:
  
  Database Constraints: The table may have constraints that prevent the creation of the index, such as existing data that violates the index definition.
  Insufficient Authorizations: The user executing the migration may not have the necessary authorizations to create indexes in the database.
  Database Locking Issues: There may be locks on the table that prevent the index from being created.
  Database Configuration: The database may not be configured correctly, or there may be limitations based on the database type (e.g., certain indexes may not be supported).
  Existing Index: An index with the same name may already exist, leading to a conflict.
  
  Solutions:
  
  Check Constraints: Review the table structure and data to ensure that there are no constraints or data issues that would prevent the index from being created.
  Review Authorizations: Ensure that the user has the necessary authorizations to create indexes. This may involve checking roles and permissions in the SAP system.
  Release Locks: Check for any locks on the table and release them if necessary. You can use transaction codes like SM12 to view and manage locks.
  Existing Indexes: Check if an index with the same name already exists. If it does, you may need to drop the existing index or rename the new one.
  Database Logs: Review the database logs for any additional error messages or information that can provide more context about the failure.
  Consult Documentation: Refer to SAP Notes or documentation related to the specific migration tool you are using for any known issues or additional troubleshooting steps.
  
  Related Information:
  
  SAP Notes: Search for relevant SAP Notes in the SAP Support Portal that may address this specific error or provide additional troubleshooting steps.
  Transaction Codes: Familiarize yourself with transaction codes like SE11 (Data Dictionary), SE14 (Database Utility), and SM21 (System Log) for further investigation.
  Migration Cockpit Documentation: Review the official SAP documentation for the Migration Cockpit or the specific tool you are using for any guidelines on index creation and data migration.
  
  If the issue persists after trying the above solutions, consider reaching out to SAP support for further assistance, providing them with detailed information about the error and the context in which it occurred.