How To Fix WER_UI101 - Please select only one rule at a time from the rule set table

WER_UI101 - Overview

• Message type: E = Error

• Message class: WER_UI - UI related messages

• Message number: 101

• Message text: Please select only one rule at a time from the rule set table

Self-Explanatory Message

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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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Smart SAP Assistant

• What is the cause and solution for SAP error message WER_UI101 - Please select only one rule at a time from the rule set table ?

  SAP Error Message:
  WER_UI101 – "Please select only one rule at a time from the rule set table"
  
  
  Cause:
  This error occurs when a user tries to select multiple rules simultaneously from a rule set table in a SAP application or transaction where only a single rule selection is allowed at a time. The system enforces this restriction to ensure that the processing logic or validation is applied to one rule at a time, avoiding ambiguity or conflicts.
  
  
  Solution:
  
  Select only one rule: When working with the rule set table, make sure to select exactly one rule before proceeding.  
  Deselect multiple selections: If multiple rules are selected, deselect all but one.  
  Check UI controls: Sometimes, the UI might allow multiple selections due to user interface settings or customizations. Ensure that the selection mode is set to single selection if possible.  
  Review user instructions: Follow the application or transaction instructions carefully regarding rule