Log On To
Fb Business Manager
Go to Business Settings and under Business Manager, click Business Settings
Click Business Info.
Below Business Manager Info, find your Business Manager ID number
Under Business Verification Status, click on View Details and check under Business Verification
Find the Verify Details option and upload your Company registration and Address proof and continue with adding the relevant details.
All Done! You have now applied for Facebook verification.
If the verify button is greyed out, Please follow the steps below.
Login / Create an account (if you do not have one) on Facebook for Developers
Click on My Apps on the top panel and choose Create App
Click on Manage Business Integrations
Fill in all the details and click on Create App Id
You will then be able to see your App Id number below the App you just created
Copy this App Id and follow the steps above.