bizz84/SwiftyStoreKit

Purchase is a duplicate and will not be reported

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#571 opened on Aug 12, 2020

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area: purchase flowsdifficulty: intermediatehelp wantedtype: bug

Description

[Firebase/Analytics][I-ACS023141] Purchase is a duplicate and will not be reported. Product ID: com.docdigitales.iosapp.plan_ilimitado_web_ios Product is expired since 2020-08-12 19:33:37 +0000

I have a Group Subscription with 2 plans, if i buy first the Premium plan, and then the Basic Plan, everything works well, both Purchases Pass, but if i have The basic Plan and then try to buy the Premium plan, the payment was success but the verifyReceipt return me that Error Above.

I'm using the function to purchase and verifySubscription.

Contributor guide

Tech stack
swiftios
Domain
mobilepayments
Issue type
bug
DifficultyEstimated implementation difficulty for a new contributor, from 1 for very small changes to 5 for expert-level work.
3
Estimated timeA rough time range for an experienced contributor to investigate, implement, test, and prepare a pull request.
1-3 hours
Activity statusHow available the issue appears right now: fresh, active, stale, blocked, or waiting on maintainer input.
stale
ClarityHow clearly the issue explains the expected change, acceptance criteria, and next step.
mostly clear
Prerequisites
Basic knowledge of iOS in app purchasesFamiliarity with SwiftyStoreKit API
Newbie friendlinessA 1-100 score estimating how approachable this issue is for first-time contributors.
25
Research direction
Investigate how SwiftyStoreKit handles receipt validation for subscription groups. Look at the verifyReceipt and verifySubscription functions in the codebase. Check if there is a known issue with upgrading from a basic plan to a premium plan causing a duplicate purchase error. Review Apple's documentation on receipt validation for auto renewable subscriptions. The main issue file is likely in the SwiftyStoreKit source under receipt verification. Consider if the library correctly handles the case where a user purchases a different plan within the same subscription group after already having an active subscription.