How can we manage the transaction using skrequest in iphone ?

Question

HI all,

I want to make some transaction using store kit framework.what's the wrong going on with me is when i make transaction than it repeated it itself do the transaction more than one time and i need just for once.I tried to release the transaction queue array but after doing that the app get crashing .

can anybody suggest me the way ,How can i reduce the redundancy of the transaction and made it only once or how/where can i release the transaction array in the store kit classes in the store observer functions.

Thanks,