With API v3.1 you are able to manage all businesses that the authenticated user can access.

For users who have access to multiple businesses, the X-Business header must be set if the request is for a business other than the lead business. This ensures API requests are routed to the user selected business.

For convenience, you no longer need to specify the X-Business header, as API requests are automatically routed to the user’s lead business. To obtain their lead business, you can now call

GET /businesses/lead

Find out more about that in our Key Concept Best Practices.