Hi Netrey,
It's a good question, because for this solution I've made a query to bring me Customers that I wanted to update. So I have the AddressInformation UUID's that came from the QueryCustomerIn WebService.
I'd suggest that (if possible) to insert the Address along with the Customer itself on the Customer creation/update process. Or, maybe search for the created/updated Customer with the returned Customer UUID on the QueryCustomerIn WS and then reach out for the AddressInformation UUID (this second option doesn't seem as elegant as the first one, so I'd recommend to check if is really not possible to insert/update the Address in the Customer saving).
Best Regards,
Fernando Alves
