How To Fix DT123 - Specified table types are not defined

SAP Error Message - Details

• Message type: E = Error

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

• Message number: 123

• Message text: Specified table types are not defined

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 DT123 - Specified table types are not defined ?

  The SAP error message DT123, which states "Specified table types are not defined," typically occurs when there is an issue with the definition of table types in your ABAP program or when you are trying to use a table type that has not been defined in the system.
  Causes:
  
  Undefined Table Type: The table type you are trying to use in your ABAP program has not been defined in the Data Dictionary (SE11).
  Typographical Errors: There may be a typo in the name of the table type you are referencing.
  Transport Issues: If the table type was recently created or modified, it may not have been transported correctly to the system where you are encountering the error.
  Authorization Issues: Lack of proper authorizations to access the table type can also lead to this error.
  
  Solutions:
  
  
  Check Table Type Definition:
  
  Go to transaction SE11 (Data Dictionary).
  Enter the name of the table type you are trying to use and check if it exists.
  If it does not exist, you will need to create it.
  
  
  
  Correct Typographical Errors:
  
  Review your ABAP code for any typos in the table type name.
  Ensure that the name matches exactly with what is defined in the Data Dictionary.
  
  
  
  Transport Check:
  
  If the table type was recently created or modified, ensure that it has been transported to the system where you are encountering the error.
  Check the transport logs for any issues.
  
  
  
  Authorization Check:
  
  Ensure that you have the necessary authorizations to access the table type.
  Consult with your SAP security team if you suspect authorization issues.
  
  
  
  Recompile the Program:
  
  Sometimes recompiling the program can resolve issues related to outdated references. You can do this by activating the program again in the ABAP Editor (SE38).
  
  
  
  Related Information:
  
  
  Transaction Codes:
  
  SE11: Data Dictionary to check and create table types.
  SE38: ABAP Editor to view and edit your ABAP programs.
  
  
  
  Documentation: Refer to SAP Help documentation for more details on defining and using table types in ABAP.
  
  
  SAP Notes: Check SAP Notes for any known issues or patches related to this error message.
  
  
  By following these steps, you should be able to identify and resolve the issue causing the DT123 error in your SAP environment.