How To Fix SDME_OBJ402 - A global class with the name &1 already exists

SAP Error Message - Details

• Message type: E = Error

• Message class: SDME_OBJ - DME: Maintenance Object Messages

• Message number: 402

• Message text: A global class with the name &1 already exists

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.

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Smart SAP Assistant

• What is the cause and solution for SAP error message SDME_OBJ402 - A global class with the name &1 already exists ?

  The SAP error message SDME_OBJ402 indicates that there is an attempt to create a global class with a name that already exists in the system. This typically occurs in the context of ABAP development when you are trying to define a new class in the ABAP Workbench (SE80 or SE24) or when importing objects from a transport request.
  Cause:
  
  
  Duplicate Class Name: The most common cause is that a class with the specified name already exists in the system. This can happen if:
  
  You are trying to create a class with the same name as an existing one.
  There is a naming conflict due to multiple developers working on similar objects.
  A transport request containing the class has already been imported into the system.
  
  
  
  Namespace Issues: If you are working in a specific namespace and trying to create a class that conflicts with another class in the same or a different namespace.
  
  
  Solution:
  
  
  Check Existing Classes: 
  
  Use transaction SE80 or SE24 to search for the class name in the system. 
  If the class already exists, you may need to either modify the existing class or choose a different name for your new class.
  
  
  
  Rename the Class: If you are creating a new class and find that the name is already taken, consider renaming your class to something unique.
  
  
  Transport Requests: If you suspect that the class was imported from a transport request, check the transport logs to see if the class was included in a recent transport. If so, you may need to coordinate with your team to avoid conflicts.
  
  
  Namespace Management: If you are working in a specific namespace, ensure that your class name adheres to the naming conventions and does not conflict with existing classes in that namespace.
  
  
  Check for Deletion: If you believe the class should not exist, check if it was deleted in a previous transport. You may need to restore it or adjust your development accordingly.
  
  
  Related Information:
  
  ABAP Workbench (SE80): This is the primary tool for managing ABAP objects, including classes. You can use it to search for existing classes and manage your development objects.
  Class Naming Conventions: Familiarize yourself with the naming conventions in your organization to avoid conflicts.
  Transport Management: Understanding how transports work in SAP can help you manage object versions and avoid conflicts.
  
  If you continue to face issues, consider reaching out to your SAP Basis or development team for further assistance, as they may have additional insights into the system's configuration and object management.