How to place orders with broker codes Broker code is an order identifier automatically generated in the boss background when applying. Like the channelID of a node, it is the basis for our settlement with brokers. Therefore, the broker code must be marked in the "tag" when an order is placed. Example: Your broker code is "ABCD"; When you place an order, you need to input the broker code in "tag". For example, on the information of trading order No.