目前一款App正在开发中, 想测试一下In App purchase功能, 但由于还没有开发完所以不想提交到app store审核, 就只在itunes connect里注册了App信息.
但在in app purchase里显示. 是不是说我必须先要上传一个app才能进行沙盒测试?

Your first In-App Purchase(s) must be submitted with a new app version. Select them from the In-App Purchases section of the Version Details page and then click Ready to Upload Binary.

ps. 现在app在itunes connect里显示的状态是 Prepare for Upload