The PO Box comes into Play when the package gets to USPS and UPS ...

Check with your carrier to ensure that you can get the returned package and can send to the PO Box address ...

UPS doesn't deliver to PO Boxes ...

NOTE: Mailboxes Etc. and the like while they are PO Box the address can be written as Suite 32 vs PO Box 32 and UPS will deliver as they have the same hours as UPS ...