How To Fix WER_UI123 - Operation can only be performed on an element of the main condition

SAP Error Message - Details

• Message type: E = Error

• Message class: WER_UI - UI related messages

• Message number: 123

• Message text: Operation can only be performed on an element of the main condition

Self-Explanatory Message

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• What is the cause and solution for SAP error message WER_UI123 - Operation can only be performed on an element of the main condition ?

  SAP Error Message:
  
  WER_UI123: Operation can only be performed on an element of the main condition
  
  Cause:
  This error occurs when an operation or action is attempted on a condition element that is not the main condition in a pricing procedure or condition technique. In SAP pricing, certain operations (like changes, deletions, or specific updates) are only valid on the main condition element, not on sub-conditions, secondary conditions, or condition supplements.
  Typically, this happens when:
  
  A user or program tries to modify or delete a condition that is a sub-condition or dependent condition rather than the main condition.
  The system expects the operation to be performed on the primary condition record, but the context or selection points to a different element.
  Custom code or user exits/enhancements incorrectly reference or manipulate condition elements.
  
  
  Solution:
  
  
  Check the Condition Element:
  
  Verify which condition element you are trying to operate on.
  Ensure that the operation is performed on the main condition element, not on a sub-condition or secondary condition.
  
  
  
  Review Pricing Procedure:
  
  Analyze the pricing procedure to identify the main condition and its related sub-conditions.
  Confirm that the condition you want to change or delete is indeed the main condition.
  
  
  
  Adjust User Actions or Code:
  
  If this error occurs during manual processing, ensure you select the main condition line before performing the operation.
  If the error arises from custom code (user exits, BADIs, or enhancements), review the logic to ensure it targets the main condition element correctly.
  Use appropriate function modules or BAPIs that handle condition elements properly.
  
  
  
  Debugging:
  
  Use debugging tools to trace where the operation is triggered.
  Check the internal tables or structures holding condition data to confirm the element type.
  
  
  
  SAP Notes and Documentation:
  
  Search for SAP Notes related to message WER_UI123 for any known issues or patches.
  Review SAP Help Portal documentation on pricing conditions and condition techniques.
  
  
  
  
  Related Information:
  
  Pricing Procedure: The sequence and structure of conditions in pricing, where the main condition is the primary element that controls pricing logic.
  Condition Types: Main conditions vs. sub-conditions (e.g., discounts, surcharges).
  User Exits / BADIs: Custom enhancements that might manipulate pricing conditions.
  Function Modules: Use standard SAP function modules like PRICING or CONDITION related FM’s to handle conditions safely.
  SAP Transaction Codes:  
  
  VK11 / VK12 / VK13 for condition maintenance  
  VA01 / VA02 for sales order processing  
  MEK1 / MEK2 for purchasing conditions
  
  
  
  
  If you provide the exact context (transaction, user action, or custom code snippet), I can help with a more tailored solution.