How To Fix DT150 - Table class & is not known

SAP Error Message - Details

• Message type: E = Error

• Message class: DT - Table activation (incl. indexes)

• Message number: 150

• Message text: Table class & is not known

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 DT150 - Table class & is not known ?

  The SAP error message DT150, which states "Table class & is not known," typically occurs when the system cannot recognize a specified table class in the context of a data dictionary operation. This can happen for various reasons, including configuration issues, missing entries, or incorrect references in your ABAP code or data dictionary objects.
  Causes:
  
  Missing Table Class Definition: The specified table class may not be defined in the system.
  Typographical Errors: There may be a typo in the table class name in your code or configuration.
  Transport Issues: If the table class was recently transported from another system, it may not have been included or activated properly.
  Authorization Issues: Lack of proper authorizations to access the table class can also lead to this error.
  System Configuration: The system may not be configured correctly to recognize the table class.
  
  Solutions:
  
  
  Check Table Class Definition:
  
  Go to transaction SE11 (Data Dictionary) and check if the table class exists. If it does not, you may need to create it or correct the reference in your code.
  
  
  
  Correct Typographical Errors:
  
  Review the code or configuration where the error is occurring and ensure that the table class name is spelled correctly.
  
  
  
  Transport Management:
  
  If the table class was supposed to be transported, check the transport logs to ensure it was included and activated in the target system.
  
  
  
  Authorization Check:
  
  Ensure that the user has the necessary authorizations to access the table class. You can check this in transaction SU53 after the error occurs.
  
  
  
  System Configuration:
  
  If the table class is part of a specific configuration or module, ensure that all necessary components are installed and configured correctly.
  
  
  
  Consult Documentation:
  
  Refer to SAP documentation or notes related to the specific table class or module you are working with for any additional insights or known issues.
  
  
  
  Related Information:
  
  Transaction Codes: SE11 (Data Dictionary), SE80 (Object Navigator), SU53 (Authorization Check).
  SAP Notes: Search for relevant SAP Notes in the SAP Support Portal that may address this specific error or provide additional troubleshooting steps.
  Community Forums: Check SAP Community or other forums for similar issues and solutions shared by other users.
  
  If the issue persists after trying the above solutions, consider reaching out to your SAP Basis or development team for further assistance.