It looks like your question hasn't been answered yet. If you could provide the following information, it might help the others in the Apple Support Communities help you find a solution:
In what circumstances does this request appear, and what is the exact message you receive? What iPhone model are you using, and on what iOS version? Is this a new iPhone you're trying to set up for the first time, or one you have had and been using?
It looks like your question hasn't been answered yet. If you could provide the following information, it might help the others in the Apple Support Communities help you find a solution:
In what circumstances does this request appear, and what is the exact message you receive? What iPhone model are you using, and on what iOS version? Is this a new iPhone you're trying to set up for the first time, or one you have had and been using?