How To Fix /PM0/3FWTG_GENERATOR104 - Class name '&1' is not allowed

SAP Error Message - Details

• Message type: E = Error

• Message class: /PM0/3FWTG_GENERATOR -

• Message number: 104

• Message text: Class name '&1' is not allowed

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.

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Smart SAP Assistant

• What is the cause and solution for SAP error message /PM0/3FWTG_GENERATOR104 - Class name '&1' is not allowed ?

  The SAP error message /PM0/3FWTG_GENERATOR104 Class name '&1' is not allowed typically occurs in the context of the SAP Plant Maintenance (PM) module, particularly when dealing with the creation or modification of functional locations, equipment, or maintenance plans. This error indicates that the class name specified (represented by &1) is not permitted in the current context.
  Cause:
  
  Invalid Class Name: The class name you are trying to use may not be defined in the system or may not be allowed for the specific operation you are attempting.
  Authorization Issues: The user may not have the necessary authorizations to use the specified class.
  Configuration Settings: The system configuration may restrict the use of certain class names for specific objects or transactions.
  Data Consistency: There may be inconsistencies in the data or configuration that prevent the use of the specified class.
  
  Solution:
  
  Check Class Definition: Verify that the class name you are trying to use is correctly defined in the system. You can do this by navigating to the Class Builder (Transaction Code: CL02) and checking if the class exists and is active.
  Review Authorizations: Ensure that the user has the necessary authorizations to use the specified class. This can be checked in the user roles and profiles.
  Consult Configuration: Review the configuration settings related to the specific transaction or object type you are working with. This may involve checking the customizing settings in SPRO.
  Use Allowed Class Names: If the class name is indeed not allowed, consider using a different class that is permitted for the operation you are performing.
  Check for Notes and Patches: Sometimes, SAP releases notes or patches that address specific issues. Check the SAP Support Portal for any relevant notes that might pertain to this error message.
  
  Related Information:
  
  SAP Documentation: Refer to the official SAP documentation for the Plant Maintenance module for more details on class usage and restrictions.
  SAP Community: Engage with the SAP Community forums to see if other users have encountered similar issues and what solutions they found.
  Transaction Codes: Familiarize yourself with relevant transaction codes such as CL01 (Create Class), CL02 (Change Class), and CL03 (Display Class) for managing class definitions.
  
  If the issue persists after following these steps, it may be beneficial to consult with your SAP Basis or functional team for further investigation.