1
Log in to your Facebook account and navigate to the Business Manager homepage.
2
Click on "Business Settings" on the left hand menu to access your account settings.
3
In the left-hand menu, click on "Business Info."
4
Under the "Business Manager Info" section, you will find your Business Manager ID displayed.
The Business Manager ID is important because it uniquely identifies your business account within the Facebook Business Manager platform. This ID is necessary for certain actions, such as connecting your business account to third-party services or troubleshooting issues with Facebook support.