how to submit a windows phone 8 to the store

Hello, I'm sorry if this question has already been asked but I did not find an answer to my problem.

I successfully to put my game on the store windows. but I have a problem with the windows phone store.

After the game I uploaded the following error message is displayed:

"We're only certifying apps that target Windows Phone OS 6.3.1 at this time. Submit your app again when you hear from us that we're ready to support this version."

I'm sorry for my English mistakes, but I hope you understand my problem.

thanks