"Transaction already succeeded" error on iOS

[Shahil-Harripersad]

Hi everyone.

Background: I have created a cross-platform mobile food ordering application that allows users to order food from a restaurant. The user selects their desired food item, and then pays for it on the app using the Paystack payment gateway.

The issue: The payment gateway works perfectly on Android. The user is able to enter their payment details, confirm the transaction on their Bank’s mobile banking app, and then get a “transaction successful” message on the Paystack payment gateway before their order is placed. However, it does not work on IOS. Once I confirm the transaction on my mobile banking app on IOS, The Paystack screen counts down from 3, displays the “transaction successful” message (as if it has worked), but then fails, displaying the error message: “Transaction already succeeded”, and the payment goes through without placing the order.

Please can someone assist. Any help would be much appreciated!