Retrieve an access token to sync and submit message templates.
- WhatsApp Messages API
- Open the Facebook business Manager
- Select WhatsApp accounts
- Click on any of your WhatsApp business accounts visible and choose Settings
- Click on the WhatsApp Manager button
- A new window pops up. Assuming Chrome is the browser, right-click and select Inspect.
- Select the Network tab and Refresh the page
- A lot of requests will appear under Name. Scroll down and find one that has "?access_token="
- Double click on the value after access_token: and keep a copy
- The copied token can be used to manage templates through the Graph API
- Check the token's validity using the Facebook Access Token Debugger https://developers.facebook.com/tools/debug/accesstoken