How To Fix TPDA815 - The two variables for the comparison are identical

SAP Error Message - Details

• Message type: E = Error

• Message class: TPDA - Debugger

• Message number: 815

• Message text: The two variables for the comparison are identical

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message TPDA815 - The two variables for the comparison are identical ?

  The SAP error message TPDA815, which states "The two variables for the comparison are identical," typically occurs in the context of data selection or comparison operations within SAP systems, particularly in ABAP programming or when working with selection screens.
  Cause:
  This error arises when a comparison operation is attempted between two variables that are the same. For example, if you have a condition like IF variable1 = variable1, the system recognizes that this comparison is redundant and will throw the error TPDA815. This can happen in various scenarios, such as:
  
  In a selection screen where the same field is being compared to itself.
  In ABAP code where a logical condition is incorrectly set up.
  
  Solution:
  To resolve this error, you need to review the code or selection criteria where the comparison is being made. Here are some steps to troubleshoot and fix the issue:
  
  
  Identify the Comparison: Look for the line of code or the selection criteria that is causing the error. This will typically be in an IF statement or a selection condition.
  
  
  Correct the Logic: Ensure that the comparison is meaningful. If you are trying to compare two different variables, make sure they are indeed different. If you mistakenly compared a variable to itself, you should remove that comparison or replace it with a valid one.
  For example, change:
  IF variable1 = variable1.
  To:
  IF variable1 = variable2.  " Assuming variable2 is the intended variable for comparison
  
  
  Review Selection Screens: If the error occurs in a selection screen, check the parameters and ensure that you are not using the same field for both comparison values.
  
  
  Testing: After making the necessary changes, test the program or selection screen to ensure that the error no longer occurs and that the logic behaves as expected.
  
  
  Related Information:
  
  Debugging: If you are unsure where the error is occurring, you can use the ABAP debugger to step through the code and identify the exact line causing the issue.
  Documentation: Refer to SAP documentation or community forums for additional context on the error message and similar issues encountered by other users.
  Best Practices: Always ensure that comparisons are logically sound and that you are comparing different variables unless you have a specific reason to compare a variable to itself.
  
  By following these steps, you should be able to resolve the TPDA815 error and ensure that your comparisons in SAP are valid and meaningful.