How To Fix WRF_AT148 - Change of DC to &3 not possible in allocation table &1, item &2

WRF_AT148 - Overview

• Message type: E = Error

• Message class: WRF_AT - Messages for Allocation Table RTFASH

• Message number: 148

• Message text: Change of DC to &3 not possible in allocation table &1, item &2

What causes this issue?

You tried to change the distribution center from &V4& to &V3& in the
purchase order. If you did so, the supply sources for the recipients in
the allocation table would become ambiguous. Therefore, this change is
not possible.
You can only change a distribution center in the following cases:
Recipients already exist and you want to supply them from a new
distribution center.
This is the only distribution center you want to change.
All recipients are supplied by the new distribution center in this case.

System Response

The system does not synchronize with allocation table &V1&, item &V2&.

How to fix this error?

Select a different distribution center for the purchase order item.

Procedure for System Administrators

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.

Smart SAP Assistant

• What is the cause and solution for SAP error message WRF_AT148 - Change of DC to &3 not possible in allocation table &1, item &2 ?

  Certainly! Here's a detailed explanation for the SAP error message:
  
  SAP Error Message:
  WRF_AT148: Change of DC to &3 not possible in allocation table &1, item &2
  
  Meaning / 
  Cause:
  This error occurs when you attempt to change the Distribution Channel (DC) in an allocation table for a specific item, but the system does not allow this change. The allocation table is used in pricing or condition records, and certain fields like Distribution Channel are key fields that cannot be changed once the record is created.
  
  &1 = Allocation table name
  &2 = Item number in the allocation table
  &3 = New Distribution Channel value you tried to set
  
  The root cause is that the Distribution Channel is a key field in the allocation table, and SAP does not permit changing key fields directly in existing records because it would affect data integrity and consistency.
  
  When does this happen?
  
  When you try to modify an existing condition record or allocation