in app purchase error

I am getting this message repeatedly when using inapp purchase开发者_运维知识库 .it was working properly before 2 days .i have not changed any code.any idea on what may be the problem.....

 mycomputer-iPhone /System/Library/PrivateFrameworks/iTunesStore.framework/Support/itunesstored[584] <Error>: URL: https://p24-sandbox.itunes.apple.com/WebObjects/MZFinance.woa/wa/offerAvailabilityAndInfoDialog?restrictionLevel=1000&guid=xxxxxxxxxxxxxxxxx&quantity=1&offerName=xxxxxxxxxxxx&bvrs=1.0&bid=xxxxxxxxxxxxxxxxxxx=en&icuLocale=en_IN Heuristics Failed, NOT PIPELINING

Where are you releasing your request object?

This error is common if you release your request object too soon. If you are releasing it anywhere else but in the following method:

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

then you are doing it wrong. See this Apple guide for more information.

Also make sure that you are signed out of the Store in the Settings application on your testing device before starting to test In App Purchase.