Enter Purchase Order number while creating Purchase Order manually

Summary:

We have a requirement that the Purchase Order number needs to be entered manually for the PO during manual PO creation.

Content (please ensure you mask any confidential information):

We understand that the PO number can be entered if we are creating PO via FBDI or Rest API. But we want to create the PO in UI and assign any desired PO number. We are aware that renumbering API is available, but it is not convenient for everyday PO creation.

This requirement is to assign PO numbers based on deliver to location (or Inventory Organization) i.e., PO number will have a prefix of ship to location. But currently numbering in Setups is only allowed based on Legal Entity, we are not able to fulfil this requirement.