I wanted to acknowledge a subscription purchase made by user.
According to Google docs I have to send a subscriptionID, but according to purchases.subscriptionsv2.get it may return more than one line item, each line item contains its own subscriptionId (productId)
The question is, which subscriptionId should I use in "acknowledge" if a purchase has more than one line items with different subscriptionId?
From the Doc it's not clear what to do.