> ## Documentation Index
> Fetch the complete documentation index at: https://moengage-gr001-flows-limits.mintlify.site/llms.txt
> Use this file to discover all available pages before exploring further.

# How to Configure FCM Authentication for Receiving Push Notifications?

> Configure Firebase Cloud Messaging (FCM) authentication to fix push notification delivery on Android. Resolve sender ID mismatches in MoEngage.

## Problem

Push notifications from the MoEngage dashboard are not received on Android devices due to a sender ID mismatch.

## Instructions

Perform the following steps to configure Firebase Cloud Messaging (FCM) authentication:

1. Open the Firebase console and go to the **Projects settings** section.
2. On the **Service accounts** tab, click **Generate new private key** to download the private key in JSON format, regardless of the selected language.
   <img alt="generate new private key.png" src="https://mintcdn.com/moengage-gr001-flows-limits/ykRUrzoi0Qmsi6iz/images/moengage_9f36c9.png?fit=max&auto=format&n=ykRUrzoi0Qmsi6iz&q=85&s=66098139a435e50f230c9a0fd2a1ad3c" width="1024" height="715" data-path="images/moengage_9f36c9.png" />
3. Open the downloaded private key JSON file and verify that the project\_id matches the one in your google-services.json file in the root directory of your Android project. <img alt="project id google services.png" src="https://mintcdn.com/moengage-gr001-flows-limits/uiMMNntXH1eQbZiM/images/moengage_57c032.png?fit=max&auto=format&n=uiMMNntXH1eQbZiM&q=85&s=b98834b587e40c6c012edf340eb3a1d9" width="1024" height="256" data-path="images/moengage_57c032.png" />
   <img alt="project id.png" src="https://mintcdn.com/moengage-gr001-flows-limits/IU2uMbxBG56VYQ1Q/images/moengage_f89e6f.png?fit=max&auto=format&n=IU2uMbxBG56VYQ1Q&q=85&s=d06a8367b822a11c1da0a18a90477dd2" width="1024" height="310" data-path="images/moengage_f89e6f.png" />
4. On the left navigation menu in the MoEngage dashboard, go to **Settings** > **Channels** > **Push**.
5. On the Push page, click the **App push** tab, and then click **Android (FCM)** tab.
6. Click **Private key file (Recommended)**.
7. Use the **Choose file** button to upload the private key JSON file and click **Save**.   <img alt="choose file.png" src="https://mintcdn.com/moengage-gr001-flows-limits/AAkEaDqOexjbPt6G/images/moengage_b4ed21.png?fit=max&auto=format&n=AAkEaDqOexjbPt6G&q=85&s=7998b63c291ffd2ffc0bf815c357176d" width="1024" height="406" data-path="images/moengage_b4ed21.png" />\
   Now you will see the request body of the report call with the push\_id in the Logcat window of your integrated development environment (IDE), registering the device and project on the MoEngage dashboard.
   <img src="https://mintcdn.com/moengage-gr001-flows-limits/nxjUHJA3aV8vjLAP/images/moengage_ec19ed.png?fit=max&auto=format&n=nxjUHJA3aV8vjLAP&q=85&s=3fc357ddc5b85775e7351419c9b20e18" alt="register.png" width="1024" height="307" data-path="images/moengage_ec19ed.png" />
8. In the MoEngage dashboard, navigate to **User Profile** > **User Info** > **Reachability** > **Push.** A green tick mark will confirm that the Android device can receive push notifications. <img alt="push reachability edited.png" src="https://mintcdn.com/moengage-gr001-flows-limits/XanTIJLrroLB7wTv/images/moengage_35ff1e.png?fit=max&auto=format&n=XanTIJLrroLB7wTv&q=85&s=41bb2e0e5f57efb646a230b3dc8c31c5" width="1024" height="536" data-path="images/moengage_35ff1e.png" />
9. Click **TEST PUSH**. You will see the **STATUS : SENT** indicating that the device was reachable and the notification was received.
   <img alt="test push edited.png" src="https://mintcdn.com/moengage-gr001-flows-limits/nxjUHJA3aV8vjLAP/images/moengage_ec111b.png?fit=max&auto=format&n=nxjUHJA3aV8vjLAP&q=85&s=f5373294506b0196457f60c9729c81c7" width="1024" height="584" data-path="images/moengage_ec111b.png" />
   <img alt="test push 2.png" src="https://mintcdn.com/moengage-gr001-flows-limits/4lVRo6LA8ARVlIIL/images/moengage_6c92f4.png?fit=max&auto=format&n=4lVRo6LA8ARVlIIL&q=85&s=1bc28351152beabcca197e7f09b288f4" width="640" height="1429" data-path="images/moengage_6c92f4.png" />