I have 'Enable sandbox mode for purchasing in Steam' enabled, but when I try to ConfirmPurchase going through Steam it errors 'Failed by payment provider'. Do I have to have a Steam App ID + Steam Add on to be able to test purchases with Sandbox mode enabled?
Yes, even in Sandbox mode, Steam requires that you have a valid App ID and Web API Key. You can read more about this in their documentation, here: https://partner.steamgames.com/documentation/MicroTxn (does require a valid steam developer login).
@Brendan I have enabled Sandbox mode in Playfab settings, and also my app is registered in steam. How to use Sandbox mode for payments.?
The same way you normally would, assuming your Steam user account is set up correctly on your title in Steamworks. What do you see when you try the purchase flow? If you're getting any errors, what are the details?
@Brendan After initiating the payment, I get a steam overlay pop up to authorize the payment when I click on Authorize nothing happens(Steam wallet has zero balance).But as per documentation I should get through the funding process. I can see the payment initiated under the purchase tab of the player in PlayFab.
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