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

SAP Error Message - Details

• 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.