How to Correct project Numbers After Shipment

On the "Sales and Purchase Correction" screen, it is possible to call up shipped order data and make corrections to the items. When corrections are made, a red/black slip (credit/debit note) is automatically generated. Among the items subject to correction is the project number.

Question: In the case where an incorrect project number was registered during the allocation of inventory to the project, is it possible to rearrange the project number in PPM after shipment? Or would it require returning the goods and registering the order again with the correct project number for the reallocation?