How To Fix CNV770 - No index was dropped during the conversion

SAP Error Message - Details

• Message type: E = Error

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

• Message number: 770

• Message text: No index was dropped during the conversion

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.

Unfortunately, there isn't any extra information in this error notice.

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Smart SAP Assistant

• What is the cause and solution for SAP error message CNV770 - No index was dropped during the conversion ?

  The SAP error message "CNV770 No index was dropped during the conversion" typically occurs during a data conversion process, particularly when using the SAP S/4HANA Migration Cockpit or other data migration tools. This message indicates that the system expected to drop certain database indexes as part of the conversion process, but no indexes were actually dropped.
  Cause:
  
  No Indexes to Drop: The most straightforward reason for this message is that there were no indexes defined on the tables being processed that needed to be dropped.
  Configuration Issues: There may be a misconfiguration in the conversion settings or parameters that leads to the system not identifying any indexes to drop.
  Data Model Changes: If the data model has changed (for example, if the target system does not require certain indexes), the conversion process may not find any indexes to drop.
  Conversion Logic: The logic in the conversion program may not be set up to handle the specific scenario of your data model, leading to this message being generated.
  
  Solution:
  
  Review Indexes: Check the indexes on the relevant tables in the source system. If there are indeed no indexes that need to be dropped, this message can be safely ignored.
  Check Conversion Settings: Review the settings and parameters used in the conversion process to ensure they are correctly configured.
  Consult Documentation: Refer to the SAP documentation for the specific conversion tool you are using to understand the expected behavior and any prerequisites.
  Log Analysis: Analyze the logs generated during the conversion process for any additional messages or warnings that might provide more context about the issue.
  SAP Notes: Check the SAP Support Portal for any relevant SAP Notes that might address this specific error message or provide guidance on handling it.
  Testing: If possible, conduct a test conversion in a non-production environment to replicate the issue and gather more information.
  
  Related Information:
  
  SAP S/4HANA Migration Cockpit: This tool is commonly used for data migration and may have specific requirements or configurations that need to be met.
  Database Index Management: Understanding how indexes are managed in your database can help in troubleshooting issues related to data conversion.
  SAP Community: Engaging with the SAP Community forums can provide insights from other users who may have encountered similar issues.
  
  If the message persists and you are unsure about its implications, it may be beneficial to reach out to SAP support for further assistance.