Difference Between "com.android.vending.BILLING" And "android.permission.BILLING"

Question

Whilst setting up in-app purchases in my app, I came across the fact that there are two permissions related to billing:

<uses-permission android:name="com.android.vending.BILLING" />

<uses-permission android:name="android.permission.BILLING" />

What is the difference between these two permissions? It seems most people online are stating to use the first one for in-app purchases but then what is the second one needed for?

Answer 1

For reference, this permission is no longer necessary if you've migrated to BillingClient (at the time of writing version 4.0). The following screenshot is from Android developer documentation.