Data Labeling in PO

I have a scenario, billing and shipping address on a PO is same how to set data labeling for two different fields

Can you please elaborate your need more in details, and eventually share screenshots ? If the fields have the same label, do they have different IDs that you can use in selectors? What is your issue exactly?

In a Purchase Order from customer there is only on address mentioned. same address has to be tagged for both Billing and shipping. How to do the set field in this scenario.