How To Fix TN790 - Class &2 named in attribute &1 does not exist

SAP Error Message - Details

• Message type: E = Error

• Message class: TN - Support Package Manager (SPAM) Messages

• Message number: 790

• Message text: Class &2 named in attribute &1 does not exist

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.

Unfortunately, there isn't any extra information in this error notice.

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Smart SAP Assistant

• What is the cause and solution for SAP error message TN790 - Class &2 named in attribute &1 does not exist ?

  The SAP error message TN790 indicates that a class specified in an attribute does not exist in the system. This error typically arises in the context of SAP's classification system, where classes are used to categorize materials, equipment, or other objects.
  Cause:
  
  Non-Existent Class: The class specified in the attribute does not exist in the system. This could be due to a typo in the class name or the class not being created yet.
  Incorrect Configuration: The configuration settings for the classification system may be incorrect, leading to the system not recognizing the class.
  Transport Issues: If the class was recently transported from another system, it may not have been transported correctly or may not exist in the target system.
  Authorization Issues: The user may not have the necessary authorizations to view or access the class.
  
  Solution:
  
  Check Class Existence: Verify that the class specified in the error message actually exists in the system. You can do this by navigating to the classification transaction (e.g., CL02 for changing classes) and searching for the class.
  Correct Class Name: If there is a typo or incorrect class name, correct it in the relevant configuration or master data.
  Create Class: If the class does not exist, you may need to create it using transaction CL01 (Create Class).
  Transport Check: If the class was supposed to be transported, check the transport logs to ensure it was successfully transported. If not, you may need to re-transport it.
  Authorization Check: Ensure that the user has the necessary authorizations to access the class. This may involve checking user roles and authorizations in the system.
  Consult Documentation: Review any relevant documentation or configuration guides to ensure that the classification setup is correct.
  
  Related Information:
  
  Transaction Codes: 
  
  CL01: Create Class
  CL02: Change Class
  CL03: Display Class
  
  
  Classification System: Understand the structure of the classification system in SAP, including classes, characteristics, and objects.
  SAP Notes: Check for any relevant SAP Notes that may address this specific error or provide additional troubleshooting steps.
  Support: If the issue persists, consider reaching out to your SAP support team or consulting the SAP Community for further assistance.
  
  By following these steps, you should be able to resolve the TN790 error and ensure that the classification system is functioning correctly.