How To Fix BRF358 - &1 is not a valid expression in 3-operand arithmetic &2

BRF358 - Overview

• Message type: E = Error

• Message class: BRF - Messages for Business Rule Framework

• Message number: 358

• Message text: &1 is not a valid expression in 3-operand arithmetic &2

Self-Explanatory Message

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BRF358 - Details

• The SAP error message BRF358 indicates that there is an issue with an expression in a Business Rule Framework (BRF) application, specifically related to a 3-operand arithmetic operation. The error message format suggests that the first part (&1) is the invalid expression, and the second part (&2) provides additional context about the arithmetic operation.
  
  Cause:
  The error typically arises due to one of the following reasons:
  
  Invalid Expression: The expression provided in the arithmetic operation is not valid. This could be due to syntax errors, unsupported data types, or incorrect references to variables or constants.
  Data Type Mismatch: The operands used in the arithmetic operation may not be compatible. For example, trying to perform arithmetic on a string or a non-numeric type.
  Missing Variables: If the expression references variables that are not defined or are out of scope, it can lead to this error.
  Logical Errors: The logic of the expression may not conform to the