The webhook configuration between WhatsApp and Meta is used to receive real-time updates from Meta (Facebook) when specific events occur. This is especially useful for developers building apps that need to listen and respond automatically to events, such as:

• A new message received in Messenger.

• A new comment on a Facebook Page.

• A change in user profile data.

• An update of template approval or rejection.

Prerequisites:

• A business manager with a linked WhatsApp Business Account.

• A Meta Developer account.

• A Meta business type app that has been added to your Business Manager.

• An access token.

• App Review, if you want to use webhooks with real user data

Steps to configure the webhook in Meta Developer  

1. From Meta for Developers, click My Apps > Create App.

2. Select a product (e.g., WhatsApp API Setup). Click Set Up.

3. Go to the Webhooks section.

• Under the selected product, choose Webhooks.

4. Click Edit to open the Edit webhook's callback URL pop-up. Enter in the Callback URL, then type in GFT for the Verify token from the Alert portal on the webhook configuration page.

URL: https://gftalerts.zoho.in/SMS-Gateway/callback-status/facebook 

5. Subscribe to the test services listed on the webhook configuration page by clicking Subscribe.

FAQ

Why is HTTPS mandatory for the Callback URL?  

Meta requires a secure (HTTPS) endpoint to ensure safe and encrypted communication between systems.

What happens if the webhook is not configured?  

Your system will not receive real-time updates, and automation features such as auto-replies or alerts will not function. Additionally, you will not receive any updates on whether the template has been approved or rejected.