Facebook domain verification is a way to claim ownership of your domain in Business Manager. The domain verification also allows you to manage editing permissions over your links and content in order to help prevent misuse of your domain.
Once the domain is verified, you can assign the specific Pages editing permissions for your ads. The pages associated with your Business Manager that do not have editing permissions won't be able to make changes to your ads.
First of all, you need to add your domain in the Facebook Business Manager. To do so, follow the steps mentioned below:
If you have more than one domain listed, select the domain for which you desire to confirm ownership.
After you have copied the meta tag content, follow the steps mentioned below to add a meta tag:
Once you have added the meta tag, you can proceed to verify a domain. To do so, follow the steps mentioned below:
After a while, the domain will be verified. Once the domain is verified, you will see the Verified text with green color next to the domain.