Google Play Realtime Developer Notification for one time products not working

Question

I utilize realtime developer notification to process the purchases within my app. For subscriptions this works flawless, but for one time products I never received a message.

Working:

• Subscription message
• Test message

Not working:

• One time product message

I use the "Test card - always approves" so the purchase came through. Even if I acknowlege it on the frontend, I do not receive any notification on the backend, but I should get one according to the docu

What is wrong here?

Titty

Had the same problem. This is the answer to your question: #65030488 Google documentation is really not clear about that. – Cartouche

Wow, this is such a stupid implementation. Why would they allow EVERYTHING on the backend but the one time purchases still have to processed on front end. No use at all...Thank you – Titty

Exactly. It is very frustrating for us too. But they must have some reasons why they do it like that. iOS notifications system for in-app purchases has the same behavior. – Cartouche