INVALID_SKU in Amazon in-app-purchase Version 2

Question

I am working on implementing subscription using Amazon IAP version 2. I am referring to the sample subscription application provided by them, for implementation.

Currently I am testing in Sandbox environment. For this I have set up

1. Amazon App tester in my device.
2. placed amazon.sdktester.json file in "mnt/sdcard" directory.

When I make a purchase request, I send child sku in the request as shown in sample. The request status I get in response is SUCCESSFUL. After receipt verification at backend server when I try to grant the subscription purchase, I get INVALID_SKU. When I print the value of SKU, it gives me Parent SKU. And in this case I have to call

PurchasingService.notifyFulfillment(receipt.getReceiptId(),
                    FulfillmentResult.UNAVAILABLE);

UPDATE:

My SKU at Amazon developer portal, the json I am using for testing, and in my code is same.

Could anyone please explain what exactly is going on here? Why the SKU is invalid?

Answer 1

What is your SKU set in Amazon developer portal? The SKU should be the same as the SKU in your amazon.sdktester.json

And, don't forget to install the App Tester

reference: https://developer.amazon.com/public/apis/earn/in-app-purchasing/docs-v2/testing-iap-2.0