How To Fix BRF184 - Expression "&1" in formula line is not a valid expression

BRF184 - Overview

• Message type: E = Error

• Message class: BRF - Messages for Business Rule Framework

• Message number: 184

• Message text: Expression "&1" in formula line is not a valid expression

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.

Unfortunately, there isn't any extra information in this error notice.

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Smart SAP Assistant

• What is the cause and solution for SAP error message BRF184 - Expression "&1" in formula line is not a valid expression ?

  The SAP error message BRF184 indicates that there is an issue with a Business Rule Framework (BRF) expression in a formula line. Specifically, the message states that the expression referenced (denoted by "&1") is not valid. This can occur for several reasons, and understanding the cause and finding a solution involves a few steps.
  Causes of BRF184 Error
  
  
  Syntax Errors: The expression may contain syntax errors, such as missing operators, incorrect function names, or misplaced parentheses.
  
  
  Invalid References: The expression might reference variables, constants, or functions that do not exist or are not defined in the context of the formula.
  
  
  Data Type Mismatches: The expression may involve operations on incompatible data types, leading to an invalid expression.
  
  
  Logical Errors: The logic of the expression may be flawed, such as trying to perform operations that are not allowed or making assumptions about the data that are incorrect.
  
  
  Versioning Issues: If the BRF+ application has been updated or