A: 

i am also facing same problem here . do u got any solution on it?

Abhijeet Barge
looks like a few people are reporting the same problem on the apple developer forums - might be temporary
aloo
A: 

We've been getting the same problem for the last 8 hours or so.

eping
A: 

Yeah, it seems to be a Apples problem. My sandbox app was working perfectly yesterday. Today not.

LeoUKSP
A: 

Me too, this has been the case since last night, sand box in app purchases are having problems it looks like.

The item you tried to buy is no longer available

I also had to update a provisioning profile by chance at the same time last night - guess what I thought the problem was, yep, the provisioning profile. A merry install / uninstall dance followed!

Neill