How To Fix WU485 - Material &1 with sales unit &2 has already been allocated

WU485 - Overview

• Message type: E = Error

• Message class: WU - Promotion management messages

• Message number: 485

• Message text: Material &1 with sales unit &2 has already been allocated

What causes this issue?

You selected one or more promotion items for which allocation should
take place.
You also included items for which allocation has already taken place.

System Response

Items for which allocation has taken place are ignored.

How to fix this error?

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

Error message extract from SAP system. Copyright SAP SE.

WU485 - Details

• The SAP error message WU485 indicates that a specific material (denoted by &1) with a particular sales unit (denoted by &2) has already been allocated. This typically occurs in the context of sales order processing, inventory management, or production planning, where the system is trying to allocate stock for a sales order or delivery, but finds that the stock has already been allocated to another order.
  
  Cause:
  
  Stock Allocation: The material in question has already been allocated to another sales order or delivery, which means that the available stock is insufficient for the new allocation request.
  Inventory Management: The stock might be reserved for a different purpose, such as a production order or another sales order.
  
  Configuration Issues: There may be issues with the configuration of the material master or sales order settings that lead to incorrect allocation behavior.
  
  
  Solution:
  
  Check Stock Availability: Verify the stock levels for the material in question. Use transaction codes like