How To Fix CNV_DMC_UI_FW_EXCEPT052 - Unable to create instance of type &1; class is not unique

CNV_DMC_UI_FW_EXCEPT052 - Overview

• Message type: E = Error

• Message class: CNV_DMC_UI_FW_EXCEPT - Messages for exception classes

• Message number: 052

• Message text: Unable to create instance of type &1; class is not unique

Self-Explanatory Message

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CNV_DMC_UI_FW_EXCEPT052 - Details

• The SAP error message CNV_DMC_UI_FW_EXCEPT052 indicates that there is an issue with creating an instance of a specific type because the class is not unique. This typically occurs in the context of the SAP Data Migration Cockpit (DMC) or during data migration processes where multiple classes or instances are conflicting.
  
  Cause:
  
  Multiple Implementations: The error often arises when there are multiple implementations of the same interface or class in the system. This can happen if there are custom developments or if multiple versions of a class exist in the system.
  
  Configuration Issues: Incorrect configuration settings in the DMC or related components can lead to ambiguity in class resolution.
  Transport Issues: If there have been recent transports that included changes to classes or interfaces, it might lead to inconsistencies in the system.
  
  
  Solution:
  
  
  Check Class Implementations: 
  
  Use transaction SE80 or SE11 to check for multiple implementations of the class or interface in question. Ensure that there is