post https://api.middesk.com/v1/partner/registration_requests/
Creates a new Registration Request for a child company to initiate tax registrations in a specified U.S. state. 💡 If an existing Middesk Company is not found with the given company_id or external_id, Middesk will create a new child company record using company_name.
Additional Body params
Follow this guide on additional body params you want to pass into the endpoint. This allows functionality such as pre-populating form fields in the registration.