How To Fix CNV_MBT451 - Manual changes of reading types have been saved

SAP Error Message - Details

• Message type: E = Error

• Message class: CNV_MBT - PCL message class

• Message number: 451

• Message text: Manual changes of reading types have been saved

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message CNV_MBT451 - Manual changes of reading types have been saved ?

  The SAP error message CNV_MBT451, which states "Manual changes of reading types have been saved," typically occurs during the data migration process, particularly when using the SAP S/4HANA Migration Cockpit or similar tools. This message indicates that there are manual changes made to reading types in the system that have been saved, which may conflict with the migration process.
  Cause:
  
  Manual Changes: The error is triggered when there are manual adjustments made to reading types in the system that are not aligned with the expected data structure or configuration during the migration.
  Data Consistency: The migration process expects a certain consistency in the data model, and any manual changes can lead to discrepancies.
  Configuration Issues: There may be configuration settings that are not properly aligned with the migration requirements.
  
  Solution:
  
  Review Manual Changes: Check the manual changes made to the reading types. If they are not necessary, consider reverting them to the original state.
  Data Validation: Validate the data to ensure that it meets the requirements of the migration process. This may involve checking for consistency and correctness in the reading types.
  Consult Documentation: Refer to the SAP documentation related to the migration process to understand the expected configurations and data structures.
  Use Migration Tools: If applicable, use the SAP migration tools to assist in correcting any inconsistencies or to revert changes that may be causing the error.
  Testing: After making the necessary adjustments, conduct thorough testing to ensure that the migration can proceed without further issues.
  
  Related Information:
  
  SAP Notes: Check for any relevant SAP Notes that may provide additional insights or solutions related to this error message.
  SAP Community: Engage with the SAP Community forums to see if other users have encountered similar issues and what solutions they have found.
  Migration Cockpit: Familiarize yourself with the SAP S/4HANA Migration Cockpit and its functionalities, as it may provide tools to help manage and resolve data migration issues.
  
  If the problem persists after following these steps, it may be beneficial to reach out to SAP support for further assistance.