How To Fix FDT_EXPRESSIONS872 - Incorrect use of boolean operator '&1' after '&2'

SAP Error Message - Details

• Message type: E = Error

• Message class: FDT_EXPRESSIONS - Formula & Derivation Tool: Expressions

• Message number: 872

• Message text: Incorrect use of boolean operator '&1' after '&2'

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message FDT_EXPRESSIONS872 - Incorrect use of boolean operator '&1' after '&2' ?

  The SAP error message FDT_EXPRESSIONS872 indicates that there is an incorrect use of a boolean operator in an expression within the SAP system, specifically in the context of the Flexible Data Import (FDI) or Flexible Data Transfer (FDT) framework. This error typically arises when the syntax of a boolean expression is not correctly formed, leading to confusion in the logical evaluation.
  Cause:
  The error message suggests that there is a misuse of a boolean operator (like AND, OR, etc.) in the expression. The placeholders &1 and &2 in the error message usually represent the specific operators or elements involved in the incorrect expression. Common causes include:
  
  Incorrect placement of operators.
  Using incompatible data types in the expression.
  Missing parentheses that lead to ambiguity in the expression evaluation.
  Logical errors in the expression structure.
  
  Solution:
  To resolve this error, you can follow these steps:
  
  
  Review the Expression: Check the expression where the error occurred. Look for the specific boolean operators mentioned in the error message and ensure they are used correctly.
  
  
  Check Syntax: Ensure that the syntax of the expression adheres to the expected format. For example, if you are using AND/OR operators, make sure they are placed correctly and that the operands are valid.
  
  
  Use Parentheses: If the expression is complex, consider using parentheses to clarify the order of operations. This can help avoid ambiguity and ensure that the expression is evaluated as intended.
  
  
  Data Types: Verify that the data types of the operands being compared or evaluated are compatible. For instance, you cannot compare a string with a number directly.
  
  
  Test in Isolation: If possible, isolate the expression and test it in a simpler context to see if the error persists. This can help identify the specific part of the expression that is causing the issue.
  
  
  Consult Documentation: Refer to the SAP documentation or help resources for guidance on the correct usage of boolean operators in the context of FDT.
  
  
  Debugging: If you have access to debugging tools, use them to step through the code and identify where the expression is failing.
  
  
  Related Information:
  
  SAP Notes: Check for any relevant SAP Notes that might address this specific error or provide additional context.
  Community Forums: Look for discussions in SAP community forums or platforms like SAP Community, where other users may have encountered and resolved similar issues.
  Training Resources: If you are frequently working with FDT, consider training or resources that cover best practices for writing expressions and using boolean logic in SAP.
  
  By carefully reviewing the expression and ensuring correct syntax and logic, you should be able to resolve the FDT_EXPRESSIONS872 error.