How To Fix WER363 - Item &1, type &1 cannot be changed; it is already assigned

SAP Error Message - Details

• Message type: E = Error

• Message class: WER - Messages for the package WER

• Message number: 363

• Message text: Item &1, type &1 cannot be changed; it is already assigned

What causes this issue?

Item field &1 with type &2 has already been assigned to a parameter of
the rule element

System Response

The system issues an error message and will not allow you to continue with this transaction until the error is resolved.

How to fix this error?

All item field assignments must be removed.

Procedure for System Administrators

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message WER363 - Item &1, type &1 cannot be changed; it is already assigned ?

  Certainly! Here's a detailed explanation for the SAP error message:
  
  SAP Error Message:
  WER363 - Item &1, type &1 cannot be changed; it is already assigned
  
  
  Cause:
  This error occurs when you try to change the item category or item type of a sales document item that has already been assigned or processed in a way that restricts changes. For example, the item might already be linked to delivery, billing, or other subsequent documents, or it has been processed in a status that does not allow modification of the item type.
  In other words, once an item is assigned a certain type and has been processed or referenced in follow-up documents, SAP prevents changing the item type to maintain data consistency and integrity.
  
  Typical Scenarios:
  
  Changing the item category/type after the item has been included in a delivery or billing document.
  Attempting to modify an item that has already been assigned to a production order or service order.
  Trying