Software⏱️ 2 min read📅 2026-05-29

How to Fix: FLUTTER PAIN ---Flutter in_app_purchase on Android: purchase successful (re

Verify IAP backend Cloud Function not invoked after successful purchase

Quick Answer: Check if the verifyIAP function is being called in your backend Cloud Function, and ensure it's correctly handling the received receipt.

The issue you're facing is due to a misconfiguration in your Flutter In App Purchase implementation. The purchaseStream delivers an error even though the purchase was successful, and the verifyIAP backend function is not being invoked.

⚠️ Common Causes

  • Insufficient permissions in the AndroidManifest.xml file.

🚀 How to Resolve This Issue

Method 1: Update Permissions

  1. Step 1: Open the AndroidManifest.xml file and add the necessary permissions for in-app purchases.

Method 2: Verify IAP Backend Function

  1. Step 1: Check if the verifyIAP backend function is correctly implemented and configured.

✨ Wrapping Up

To resolve this issue, ensure that you have added the necessary permissions to your AndroidManifest.xml file and verify that your IAP backend function is correctly implemented. If you're still facing issues, consider seeking further assistance from Flutter or Android support.

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