Place a margin or futures limit order priced from the current best bid or offer. The role semantics match the spot order_bbo_place method, and the same ordinary limit order comes back.
Rate limits
Place margin BBO order
Request parameters
The bbo_role parameter decides which side of the spread supplies the price.
Response
The response is an ordinary margin limit order reporting type 7 — no BBO marker survives placement. The price field records where the order landed. See the order object reference.
No re-pegging happens. The price is resolved once, at placement, and the order then behaves like any other resting limit order as the order book moves away from it.
Error codes
Standard transport errors and the shared account, rate-limit, and region codes are listed in Order Management. 
