Authentication requied. You need to sign in google play account. in in-app billing

Question

I have an error

Authentication requied. You need to sign in google play account.

while testing in-app billing on my device with testing account.

I have implemented in-app billing v3 and i have uploaded signed apk in developer console as draft apk and running higher version signed apk in my device.

Answer 1

You need to login into Play with the same account which is added as Test Account into developer account.

From Testing Your In-app Billing Application

5 . Login to the test device by using a tester account. Test your In-app Billing application by purchasing a few items, and fix any issues that you encounter. Remember to refund the purchases if you don’t want your testers to be actually charged!

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As you said you logged in with the same user id, then problem might be Getting “Authentication is required” when trying to access the market