Is it necessary to set up all banking account info in the iPhone dev account before submitting a InAppPurchase free application?

I am developing an application in which I have to use in-app purchase feature. I referred to the below links and prepared the sample app.

http://blog.mugunthkumar.com/coding/iphone-tutorial-–-in-app-purchases/

http://troybrant.net/blog/2010/01/in-app-purchases-a-full-walkthrough/

I followed similar steps which are mentioned in these links, still I am getting the no product id (getting blank value) in

-(void)productsRequest:(SKProductsRequest *)request didReceiveResponse:(SKProductsResponse *)response

I haven't set up the Bank Info,Contact Info, Tax Info in 开发者_开发技巧"iOS Paid Applications". Is this causing any issue?

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Yes, you need to sign paid application contract to work with in-app purchase:

http://developer.apple.com/library/ios/#technotes/tn2259/_index.html