Why when I change the iTunes store it gives me an error

Hello,

If you have a US iTunes Store account, you cannot change that account to one in the German iTunes Store unless you have a payment method in that country and live there.

If you have moved to Germany, what happens when you try these steps: Change your Apple ID country or region

Hello,

What are you trying to do in the iTunes Store and what is happening when you try and do it?

For example, is there an error message?

Can you explain your issue