How To Fix WER_UI042 - Please select an expression type

WER_UI042 - Overview

• Message type: E = Error

• Message class: WER_UI - UI related messages

• Message number: 042

• Message text: Please select an expression type

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message WER_UI042 - Please select an expression type ?

  SAP Error Message:
  WER_UI042 – Please select an expression type
  
  
  Cause:
  This error occurs when you are working with SAP Workflow or Business Rule Framework plus (BRFplus) and you attempt to create or edit an expression without selecting the required expression type. The system expects you to specify what kind of expression you want to define (e.g., constant, variable, formula, function call, etc.), but this selection was not made.
  In other words, the error is triggered because the expression type is mandatory for the system to know how to process or evaluate the expression, and it was left blank or not chosen.
  
  When does it typically occur?
  
  While defining or editing expressions in BRFplus (Business Rule Framework plus).
  When creating conditions, rules, or formulas in SAP Workflow or decision tables.
  During the configuration of decision logic where expressions are required.
  
  
  
  Solution:
  
  
  Select an Expression Type:
  
  When prompted to create or edit an expression, ensure you explicitly select the expression type from