PaymentTransaction.transactionIdentifier is different from ReceiptItem.transactionId

[NandhakumarHCL]

Platform

• [#] iOS
• macOS
• tvOS

In app purchase type

• Consumable
• Non-consumable
• [#] Auto-Renewable Subscription
• Non-Renewing Subscription

Environment

• [#] Sandbox
• Production

For Analytics i need to track the Auto-Renewable Subscription.
Method: purchaseProduct(_ productId: String, quantity: Int = 1, atomically: Bool = true, applicationUsername: String = "", completion: @escaping (PurchaseResult) -> Void)

• purchaseProduct returning the PurchaseResult in completion and the PurchaseResult.PurchaseDetails.transaction.transactionIdentifier is different from the ReceiptItem.transactionId.

Please provide me solution to track the Auto-Renewable Subscription in completeTransactions(atomically: Bool = true, completion: @escaping ([Purchase]) -> Void)

[bizz84]

@NandhakumarHCL Apologies for the late reply.

The problem lies in the difference between transaction and originalTransaction.

For auto-renewable subscriptions, ReceiptItem.transactionId refers to the payment's originalTransaction.

The originalTransaction has been available in completeTransactions() and restorePurchases() since version 0.9.0. Example:

SwiftyStoreKit.completeTransactions(atomically: true) { purchases in

    for purchase in purchases {
        switch purchase.transaction.transactionState {
        case .purchased, .restored:
            if purchase.needsFinishTransaction {
                // Deliver content from server, then:
                SwiftyStoreKit.finishTransaction(purchase.transaction)
            }
            // this will match ReceiptItem.transactionId
            print("\(purchase.originalTransaction?.transactionIdentifier)")
        case .failed, .purchasing, .deferred:
            break // do nothing
        }
    }
}

originalTransaction is not available in purchaseProduct(). For consistency, it would make sense to add it, right?

[bizz84]

Available on version 0.11.3.

Closing this issue for now, feel free to comment or reopen if needed.