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I try to develop subscription function in my app recently and the project also got a back-end server.

Now I faced a question when first subscription already ended and then try to click the reSubscribe button in Google Play Store.

After searching many documents, I know there's got a parameter 'linkedPurchaseToken' that google says it would send to our back-end server through Real-time developer notifications. (https://medium.com/androiddevelopers/implementing-linkedpurchasetoken-correctly-to-prevent-duplicate-subscriptions-82dfbf7167da#eb81)
But the parameter only show up when old subscription not really finished(canceled but still in subscribe periods, upgrade, downgrade...etc).

How can I recognize brand new reSubscribe purchase without linkedPurchaseToken?
Is there any user identity data that I missed??

Or there has another method that App side can handle the resubscribe?
But I also call queryPurchase method to recongize the reSubscribe purchase, and I didn't see any parameters that tell me the purchase type.

queryPurchase data
Purchase. Json: { "orderId":"GPA.3344-XXXX-XXXX-XXXXX packageName":"net", "productId":"net.XXXXX.XXX.XXX.cs.XXX100", "purchaseTime":1611111184135, "purchaseState":0, "purchaseToken":"token...", "autoRenewing":true, "acknowledged":true}

Thanks for any help and advise.

Luna_Shih
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  • I think this question is better asked to Google Play Developer support as the behaviour you are wondering about is probably subject to change. – Max Hille Jan 26 '21 at 09:30
  • Thanks for your comment, I just think why iOS subscribe can identify the user, but android are not... – Luna_Shih Jan 26 '21 at 09:53

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