A problem with in-app purchases.
I could not purchase in-app purchases. After I clicked the buying bottom, it shows to contact itune support to finish the transaction.
iPad 2, iOS 6.0.1
These are user-to-user forums, you can contact iTunes support via this page and ask them why the message is appearing : http://www.apple.com/support/itunes/contact/ - click on Contact iTunes Store Support on the right-hand side of the page