How To Fix CNV_10030110 - Best guess mode active for &1

SAP Error Message - Details

• Message type: E = Error

• Message class: CNV_10030 - Message class for package 10030

• Message number: 110

• Message text: Best guess mode active for &1

What causes this issue?

For tables or fields where no assignment of determination has been
delivered, the system tries to suggest an assignment. The correctness of
this assignment is disputable with regards to content. Nevertheless, for
&V1&, where a suggestion is possible, this suggestion will be
automatically released.
&HINTS&
The best guess mode setting can be changed via the parameter
BEST_GUESS_MODE (transaction CNV_10030_CWBPARAM). Be aware that it is
only active in standard user mode.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message CNV_10030110 - Best guess mode active for &1 ?

  The SAP error message CNV_10030110 with the description "Best guess mode active for &1" typically relates to data migration or conversion processes, particularly in the context of SAP's data migration tools, such as the SAP S/4HANA Migration Cockpit or other data conversion scenarios.
  Cause:
  This error message indicates that the system is operating in "best guess mode" for a specific object or data set. This mode is often activated when the system is unable to determine the correct mapping or transformation for certain data elements during the migration process. It may occur due to:
  
  Incomplete Configuration: The migration settings or mappings may not be fully configured, leading the system to make assumptions about how to handle certain data.
  Data Quality Issues: The source data may contain inconsistencies, missing values, or formats that the system cannot interpret correctly.
  Unsupported Data Types: The data being migrated may include types or structures that are not supported by the target system.
  
  Solution:
  To resolve this issue, you can take the following steps:
  
  Review Migration Settings: Check the configuration settings in the migration tool to ensure that all necessary mappings and transformations are defined correctly.
  Data Quality Assessment: Perform a thorough analysis of the source data to identify any inconsistencies or issues. Cleanse the data as needed to ensure it meets the expected formats and standards.
  Consult Documentation: Refer to the SAP documentation for the specific migration tool you are using. There may be guidelines or best practices for handling data that triggers the "best guess mode."
  Adjust Mapping Rules: If applicable, adjust the mapping rules to provide clearer instructions to the system on how to handle specific data elements.
  Testing: After making adjustments, run a test migration to see if the issue persists. Monitor the logs for any additional error messages that may provide further insight.
  
  Related Information:
  
  SAP Notes: Check SAP Notes related to the specific migration tool you are using. There may be known issues or patches that address this error.
  SAP Community: Engage with the SAP Community forums to see if other users have encountered similar issues and what solutions they have found.
  Training and Documentation: Consider reviewing training materials or documentation related to data migration in SAP, as they may provide additional context and troubleshooting steps.
  
  By following these steps, you should be able to address the CNV_10030110 error and successfully complete your data migration process.