How To Fix UA_SM1001 - Type name &1 is already defined

SAP Error Message - Details

• Message type: E = Error

• Message class: UA_SM1 - Structure Maintenance

• Message number: 001

• Message text: Type name &1 is already defined

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message UA_SM1001 - Type name &1 is already defined ?

  The SAP error message UA_SM1001, which states "Type name &1 is already defined," typically occurs when there is an attempt to define a type (such as a data type, structure, or table type) in the ABAP Dictionary that has already been defined with the same name. This can happen in various scenarios, such as when creating or modifying data elements, domains, structures, or other dictionary objects.
  Cause:
  
  Duplicate Definition: The most common cause is that the type name you are trying to create or modify already exists in the system.
  Namespace Issues: If you are working in a custom namespace, there might be a conflict with standard SAP types or other custom types.
  Transport Issues: If you are transporting objects between systems, there might be a conflict if the type was already transported or exists in the target system.
  
  Solution:
  
  
  Check Existing Definitions: 
  
  Use transaction SE11 (Data Dictionary) to search for the type name in question. Check if it already exists and if it is defined correctly.
  You can also use transaction SE80 (Object Navigator) to search for the type.
  
  
  
  Rename or Modify: 
  
  If the type already exists and you need to create a new one, consider renaming your new type to avoid the conflict.
  If you need to modify the existing type, ensure that you have the necessary authorizations and that it is not locked by another user.
  
  
  
  Namespace Management: 
  
  Ensure that you are using the correct namespace for your custom types. If you are working in a custom namespace, make sure that the type name does not conflict with standard SAP types.
  
  
  
  Transport Management: 
  
  If the issue arises during a transport, check the transport logs and ensure that the type is not already included in the transport request. You may need to adjust your transport requests accordingly.
  
  
  
  Check for Active Objects: 
  
  Sometimes, an object might be active in the system, and you are trying to create a new one with the same name. Ensure that you deactivate or delete any conflicting objects if they are not needed.
  
  
  
  Related Information:
  
  Transaction Codes: SE11 (Data Dictionary), SE80 (Object Navigator), SE37 (Function Module), SE24 (Class Builder).
  Documentation: Refer to SAP Help documentation for more details on data dictionary objects and naming conventions.
  SAP Notes: Check SAP Notes for any known issues or additional guidance related to this error message.
  
  By following these steps, you should be able to resolve the UA_SM1001 error and successfully define your type in the ABAP Dictionary.