ok so I've never done this before but does anyone know what you have to do with DPCI numbers to get store clerks to go to the back and get you stuff?

As far as I know from other forums, you can enter it in to those keypad things they have in Target and it checks the stock room/shop inventory. We have similar things in Tesco over here.

ok thanks.

Yeah just go to the red price checkers at Target, type in the numbers and hit enter.
If something's in stock and you don't see it on the floor, pick up the phone & call for a worker and they're supposed to find it and bring it out to you.

I just used it a few weeks ago to get the Rancor.