GoogleTagManager: Product revenue is zero from iOS

Question

I sent to GTM the following data:

ecommerce =     {
    add =         {
        products =             (
                            {
                id = PPP011;
                name = PPP011;
                price = "0.99";
                quantity = 1;
            }
        );
    };
    currencyCode = USD;
    purchase =         {
        actionField =             {
            id = 1234565614;
            revenue = "0.99";
        };
        products =             (
                            {
                id = PPP011;
                name = PPP011;
                price = "13.99";
                quantity = 1;
            }
        );
    };
};
event = purchase;
eventAction = "<null>";
eventLabel = "<null>";
userID = 123456;

And in reports GTM I can see only the Product Revenue 0.

I've found the following potentials problem: - wrong currency code - bad transaction ID - string type in values - the same id previously sent to GTM

Can someone help with any ideas or something else for resolving this issue? I was able to start see this problem from begin of march 2016.