How To Fix OT823 - Line &1: Truth value &2 is not defined

SAP Error Message - Details

• Message type: E = Error

• Message class: OT - SAP Online Correction Support (SOCS)

• Message number: 823

• Message text: Line &1: Truth value &2 is not defined

What causes this issue?

You have defined an import condition with the truth value &V2&.
Truth value &V2& is not known in the system.
Different truth values are allowed for import conditions depending on
the prerequisite type:
Prerequisite type "A": T / F / M / O
Prerequisite type "C": T / F / M / O
Prerequisite type "D": T (normal software components)
Prerequisite type "D": F (ANY_ADDON, OTHER_COMPONENTS)
Prerequisite type "E": T
Prerequisite type "P": T/F
<ZK>Note: An import condition with prerequisite type "A" or "C" must be
defined for truth value T for the same software component. This must
also have truth value T. The import condition is no longer required for
truth value F.</>
The following truth values apply to equivalent import conditions:
Prerequisite type "A": T / M
Prerequisite type "C": T / M
Prerequisite type "P": T

System Response

The check of the import conditions was terminated.

How to fix this error?

Check the import condition and correct the incorrect entry.
Incorrect import condition (line): &V1&

Procedure for System Administrators

The system issues an error message and will not allow you to continue with this transaction until the error is resolved.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message OT823 - Line &1: Truth value &2 is not defined ?

  The SAP error message OT823 "Line &1: Truth value &2 is not defined" typically occurs in the context of ABAP programming, particularly when dealing with logical expressions or conditions. This error indicates that there is an issue with a boolean expression where the truth value is not properly defined or is invalid.
  Cause:
  
  
  Invalid Boolean Expression: The error often arises when a logical expression evaluates to a value that is not recognized as a valid boolean (true/false). This can happen if:
  
  A variable is not initialized.
  A variable is of an incorrect data type.
  There is a syntax error in the logical expression.
  
  
  
  Data Type Mismatch: If you are trying to evaluate a condition using a variable that is not of a boolean type, it can lead to this error.
  
  
  Null or Unassigned Variables: If a variable that is expected to hold a boolean value is null or unassigned, it can cause this error.
  
  
  Solution:
  
  
  Check Variable Initialization: Ensure that all variables used in the logical expression are properly initialized before they are evaluated.
  
  
  Verify Data Types: Make sure that the variables involved in the logical expression are of the correct data type (i.e., boolean). If necessary, convert or cast the variables to the appropriate type.
  
  
  Review Logical Expressions: Look for any syntax errors in the logical expressions. Ensure that all conditions are properly formed and that you are not trying to evaluate an expression that cannot yield a boolean result.
  
  
  Debugging: Use debugging tools in the ABAP Workbench to step through the code and identify where the error occurs. Check the values of the variables at runtime to see if they are as expected.
  
  
  Error Handling: Implement error handling to catch cases where a variable might not be defined or initialized, and handle those cases gracefully.
  
  
  Related Information:
  
  ABAP Documentation: Refer to the official SAP ABAP documentation for more details on data types and logical expressions.
  SAP Community: Engage with the SAP Community forums to see if others have encountered similar issues and how they resolved them.
  SAP Notes: Check for any relevant SAP Notes that might address this specific error or provide additional context.
  
  By following these steps, you should be able to identify the root cause of the OT823 error and implement a solution to resolve it.