How To Fix /PM0/3FWM_TOOL104 - Class name '&1' is not allowed

SAP Error Message - Details

• Message type: E = Error

• Message class: /PM0/3FWM_TOOL -

• 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.

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 /PM0/3FWM_TOOL104 - Class name '&1' is not allowed ?

  The SAP error message /PM0/3FWM_TOOL104 Class name '&1' is not allowed typically occurs in the context of SAP's Plant Maintenance (PM) or related modules when there is an issue with the class name being used in a certain operation, such as creating or modifying a maintenance task or object.
  Cause:
  
  Invalid Class Name: The class name specified in the operation is not recognized or is not allowed in the context of the operation being performed.
  Configuration Issues: The class may not be properly configured in the system, or it may not be assigned to the relevant object types.
  Authorization Issues: The user may not have the necessary authorizations to use the specified class.
  System Settings: There may be restrictions in the system settings that prevent the use of certain class names.
  
  Solution:
  
  Check Class Name: Verify that the class name you are trying to use is correct and exists in the system. You can do this by navigating to the relevant configuration or class management transaction (e.g., CL02 for class maintenance).
  Review Configuration: Ensure that the class is properly configured and assigned to the relevant object types. Check if the class is marked as usable for the intended purpose.
  Authorization Check: Ensure that the user has the necessary authorizations to access and use the specified class. This may involve checking user roles and authorizations in transaction SU01 or SUIM.
  Consult Documentation: Review any relevant SAP documentation or notes that may provide additional context or updates regarding the use of class names in your specific version of SAP.
  Contact Support: If the issue persists, consider reaching out to your SAP support team or consulting SAP Notes for any known issues related to this error message.
  
  Related Information:
  
  Transaction Codes: Familiarize yourself with relevant transaction codes such as CL01 (Create Class), CL02 (Change Class), and CL03 (Display Class) for managing classes in SAP.
  SAP Notes: Search for SAP Notes related to this error message in the SAP Support Portal, as there may be specific fixes or recommendations provided by SAP.
  System Logs: Check system logs (transaction SLG1) for any additional error messages or warnings that may provide more context about the issue.
  
  By following these steps, you should be able to identify the cause of the error and implement a solution.