Error occurred while processing product purchase

Help and Feedback Scripting Support
1

I am making a Robux Shop where you can buy the game currency (stars) with robux. I am not really good at scripting with the MarketplaceService, so I used the ProcessReceipt from the Developer Hub.

It worked perfectly a few days ago, but now it keeps giving me this error: “Error occurred while processing a product purchase”

Here is the script:

Script 
local MarketplaceService = game:GetService("MarketplaceService")
local Players = game:GetService("Players")

-- Data store for tracking purchases that were successfully processed

-- Table setup containing product IDs and functions for handling purchases
local productFunctions = {}
-- ProductId 123123 for a full heal
productFunctions[1215198990] = function(receipt, player)
	-- Logic/code for player buying a full heal (may vary)
	if player.Character and player.Character:FindFirstChild("Humanoid") then
		require(game.ReplicatedStorage.TweenModule):tween(player.stars, {Value = (player.stars.Value + 10000)})
		return true
	end
end
productFunctions[1215199705] = function(receipt, player)
	-- Logic/code for player buying a full heal (may vary)
	if player.Character and player.Character:FindFirstChild("Humanoid") then
		require(game.ReplicatedStorage.TweenModule):tween(player.stars, {Value = (player.stars.Value + 100000)})
		return true
	end
end
productFunctions[1215199924] = function(receipt, player)
	-- Logic/code for player buying a full heal (may vary)
	if player.Character and player.Character:FindFirstChild("Humanoid") then
		require(game.ReplicatedStorage.TweenModule):tween(player.stars, {Value = (player.stars.Value + 1000000)})
		return true
	end
end
--[[productFunctions[1215200472] = function(receipt, player)
	-- Logic/code for player buying a full heal (may vary)
	if player.Character and player.Character:FindFirstChild("Humanoid") then
		require(game.ReplicatedStorage.TweenModule):tween(player.stars, {Value = (player.stars.Value + 10000000)})
		return true
	end
end
]]
-- The core 'ProcessReceipt' callback function
local function processReceipt(receiptInfo)
	
	-- Determine if the product was already granted by checking the data store  
	local playerProductKey = receiptInfo.PlayerId .. "_" .. receiptInfo.PurchaseId
	local purchased = false
	
	-- Find the player who made the purchase in the server
	local player = Players:GetPlayerByUserId(receiptInfo.PlayerId)
	if not player then
		-- The player probably left the game
		-- If they come back, the callback will be called again
		return Enum.ProductPurchaseDecision.NotProcessedYet
	end
	
	-- Look up handler function from 'productFunctions' table above
	local handler = productFunctions[receiptInfo.ProductId]
	
	-- Call the handler function and catch any errors
	local success, result = pcall(handler, receiptInfo, player)
	if not success or not result then
		warn("Error occurred while processing a product purchase")
		print("\nProductId:", receiptInfo.ProductId)
		print("\nPlayer:", player)
		return Enum.ProductPurchaseDecision.NotProcessedYet
	end
	
	
	-- IMPORTANT: Tell Roblox that the game successfully handled the purchase
	return Enum.ProductPurchaseDecision.PurchaseGranted
end

-- Set the callback; this can only be done once by one script on the server! 
MarketplaceService.ProcessReceipt = processReceipt

Thanks,
doctorpepper126

2

Is the dev product under your game or from a third party game?

2 Likes
3

It is under my game yes (this message is here to make the post long enough)

4

Well, you really don’t need 70 line code to do something as simple as giving currency. Here’s my script that I did:

local MPS = game:GetService("MarketplaceService")
local ProductID = 1224007275 --change this to YOUR dev product. Not mine!
local Players = game:GetService("Players")
local function Receipt(ReceiptInfo)
	local BoughtProductId = ReceiptInfo.ProductId
	local Purchaser = Players:GetPlayerByUserId(ReceiptInfo.PlayerId)
	if not Purchaser then
		return Enum.ProductPurchaseDecision.NotProcessedYet
	end
	if Purchaser and  BoughtProductId == ProductID then

		local Stars = Purchaser:WaitForChild("leaderstats"):WaitForChild("Stars")
		Stars.Value += 500



	end
	return Enum.ProductPurchaseDecision.PurchaseGranted
end
MPS.ProcessReceipt = Receipt
5

Also if you wanna see if this works then u can look here:
https://gyazo.com/91dbbd918ab6efe45063a1f1318f705f

6

I will try this out and let you know how it goes

7

Just found out that another script was interfering with this one. So it wasn’t anything in the script, but thanks for the shorter version.

Have a good rest of your day!

1 Like