How To Fix /SMB/TYPES064 - Custom Type '&1' is not imported as assingment &2 &3 &4 already exists

SAP Error Message - Details

• Message type: E = Error

• Message class: /SMB/TYPES -

• Message number: 064

• Message text: Custom Type '&1' is not imported as assingment &2 &3 &4 already exists

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message /SMB/TYPES064 - Custom Type '&1' is not imported as assingment &2 &3 &4 already exists ?

  The SAP error message /SMB/TYPES064 indicates that there is an issue with the import of a custom type in the SAP system. Specifically, it states that the custom type you are trying to import (denoted as &1) cannot be imported because an assignment with the same name (or a similar name) already exists in the system, identified by &2, &3, and &4.
  Cause:
  
  Duplicate Type Definition: The custom type you are trying to import already exists in the system, which leads to a conflict.
  Namespace Issues: If you are working in a multi-client environment or with different namespaces, there might be a naming conflict.
  Transport Issues: If the type was previously transported and is already present in the target system, this error can occur.
  
  Solution:
  
  
  Check Existing Types: 
  
  Use transaction SE11 (Data Dictionary) to check if the custom type &1 already exists. If it does, you may need to modify or delete the existing type before importing the new one.
  
  
  
  Rename the Custom Type: 
  
  If the existing type is necessary and cannot be deleted, consider renaming your custom type to avoid the conflict.
  
  
  
  Review Transport Requests: 
  
  If you are importing from a transport request, ensure that the transport does not contain duplicate definitions. You may need to adjust the transport request or the objects within it.
  
  
  
  Namespace Management: 
  
  Ensure that you are using the correct namespace for your custom types to avoid conflicts with standard SAP types or other custom types.
  
  
  
  Check for Dependencies: 
  
  Sometimes, other objects may depend on the existing type. Review any dependencies that might be causing the conflict.
  
  
  
  Related Information:
  
  Transaction Codes: 
  
  SE11: Data Dictionary
  SE80: Object Navigator
  SE09/SE10: Transport Organizer
  
  
  Documentation: Review SAP documentation on custom types and data dictionary objects for best practices on naming conventions and type management.
  SAP Notes: Check for any relevant SAP Notes that might address this specific error or provide additional guidance.
  
  If the issue persists after trying the above solutions, consider reaching out to your SAP Basis or development team for further assistance, as they may have more insights into the specific configurations and customizations in your SAP environment.