CreateITShopOrder method missing for PersonHasTSBAccountDef
Using CreateITShopOrder on accounts (e.g. UNSAccount) creates an order for the account but does not remove the direct assignment for PersonHasTSBAccountDef (column XOrigin). As a result, when the PWO becomes unassigned, the direct assignment in PersonHasTSBAccountDef remains.
This is a product defect (#28078). PersonHasTSBAccountDef lacks a customizer.
A hotfix is available through a Support service request.