post
https://broker-api.sandbox.alpaca.markets/v1/accounts
Submit an account application with KYC information. This will create a trading account for the end user. The account status may or may not be ACTIVE immediately and you will receive account status updates on the event API.
Multi-Live Accounts (MLA): To open an additional account for an existing account holder, supply primary_account_holder_id at the top level instead of contact/identity data. In that case, supplying contact or identity returns HTTP 400. Only account_type of trading and ira are supported via this flow.
409There is already an existing account registered with the same email address.