How To Fix BRF191 - Decision expression &1 in CASE &2 cannot be evaluated

BRF191 - Overview

• Message type: E = Error

• Message class: BRF - Messages for Business Rule Framework

• Message number: 191

• Message text: Decision expression &1 in CASE &2 cannot be evaluated

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.

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BRF191 - Details

• The SAP error message BRF191 indicates that there is an issue with the evaluation of a decision expression within a Business Rule Framework (BRF+) case statement. This error typically arises when the decision expression cannot be processed due to various reasons, such as incorrect syntax, missing data, or logical errors in the expression.
  Causes of BRF191 Error
  
  Syntax Errors: The decision expression may contain syntax errors that prevent it from being evaluated correctly.
  Data Issues: The data being referenced in the decision expression may be missing or not in the expected format.
  Logical Errors: There may be logical inconsistencies in the expression that make it impossible to evaluate.
  Invalid References: The expression might reference objects (like variables or constants) that do not exist or are not accessible in the current context.
  
  Configuration Issues: The BRF+ configuration might not be set up correctly, leading to evaluation failures.
  
  Solutions
  
  Check Syntax: Review the decision expression for any syntax errors. Ensure