How To Fix CNV_DMC_UI_FW_EXCEPT051 - Unable to create instance of type &1; invalid type

SAP Error Message - Details

• Message type: E = Error

• Message class: CNV_DMC_UI_FW_EXCEPT - Messages for exception classes

• Message number: 051

• Message text: Unable to create instance of type &1; invalid type

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 CNV_DMC_UI_FW_EXCEPT051 - Unable to create instance of type &1; invalid type ?

  The SAP error message CNV_DMC_UI_FW_EXCEPT051 with the description "Unable to create instance of type &1; invalid type" typically occurs in the context of the SAP Data Migration Cockpit (DMC) or during data migration processes. This error indicates that the system is trying to create an instance of a specified type, but it encounters an issue because the type is considered invalid.
  Possible Causes:
  
  Incorrect Type Definition: The type specified in the error message may not be defined correctly in the system or may not exist.
  Configuration Issues: There may be configuration issues in the Data Migration Cockpit or related components that prevent the system from recognizing the type.
  Missing or Incomplete Transport: If the type was recently transported from another system, it may not have been transported correctly or completely.
  Version Compatibility: The type may not be compatible with the version of the SAP system you are using.
  Authorization Issues: Lack of proper authorizations to access the type or related objects.
  
  Solutions:
  
  Check Type Definition: Verify that the type specified in the error message exists and is defined correctly in the system. You can do this by checking the relevant data dictionary objects (e.g., tables, structures).
  Review Configuration: Ensure that the Data Migration Cockpit and any related configurations are set up correctly. This may involve checking settings in transaction codes like LTMC or LTMOM.
  Transport Check: If the type was recently transported, check the transport logs to ensure that it was transported successfully and completely. You may need to re-transport the object if it is missing.
  System Compatibility: Ensure that you are using compatible versions of SAP components. If you have recently upgraded your system, check for any necessary adjustments or updates.
  Authorization Review: Check the user authorizations to ensure that the user executing the migration has the necessary permissions to access the type and related objects.
  Debugging: If the issue persists, consider debugging the process to identify where the error occurs. This may require technical expertise in ABAP or the specific migration process.
  
  Related Information:
  
  SAP Notes: Check the SAP Support Portal for any relevant SAP Notes that may address this specific error or provide additional troubleshooting steps.
  Documentation: Review the official SAP documentation for the Data Migration Cockpit for guidance on configuration and common issues.
  Community Forums: Consider searching or posting in SAP community forums or SAP Community Network (SCN) for insights from other users who may have encountered similar issues.
  
  If the problem continues after trying the above solutions, it may be beneficial to reach out to SAP support for further assistance.