"Send Invoices to" Address on PO printout

Hi Guys,

I have a PO print out.On this printout various addresses are there such as "Deliver to", "Supplier","Send invoices to" etc.

The problem is that in the "Send invoices to" address, the PO box number is not getting picked(blank on print out).

I wish to know from where exactly this "Send Invoices to" address is getting picked up on the PO printout?