Submit Facebook App Review
Submit an app review to activate "Start Verification" button for Facebook Business Verification
You will need to request permission for the app review. Click "Request Permissions or Features".
Search "pages_show_list" permissions on the search bar and click "Request".
You will then be directed to answer some questions and provide information to process.
Provide information for "Complete App Verification" and "Requested Permission and Features" as required:
For Complete App Verification, you may follow the below selection.
For Requested Permission and Features, you are required to answer and provide screenshot of your app.
Take Video Screenshots to proceed.
Submit and provide further information.
After submittion for review, your "Start Verification" button should be activated.
You can start the Business Verifications again.