In app purchase issue ios 7

Question

For the testing purpose in app purchase is working fine in ios6 but not in ios 7.

While running in xcode for ios6 it shows that the product list has been received, but for ios7 it shows invalid product id.

This is the code I'm using:

void Start() 
{ 
    var productIdentifiers = new string[] {"product.100"}; 
    StoreKitBinding.requestProductData( productIdentifiers ); 
} 

void ButtonOne() 
{ 
    bool canMakePayments = StoreKitBinding.canMakePayments(); 
    StoreKitBinding.purchaseProduct( "product.100" , 1 ); 
}

Is there any special setting for ios7 which I am missing?