​Client supplied identifiers

11

ClOrdID

• New Order Single <D>
• Order Cancel Request <F>

• Execution Report <8>
• Order Cancel Reject <9>

The client's request identifier, which may refer to either an order or an order-cancel request.

Gemini strongly recommends making this field unique among active orders for a given port. One common practice is to include a date prefix (e.g., 20160114_0001).

Gemini does not enforce uniqueness, so sending a duplicate ClOrdID <11> might cause confusion in downstream reports.

41

OrigClOrdID

• New Order Single <D>
• Order Cancel Request <F>

• Execution Report <8>
• Order Cancel Reject <9>

Specifies the ClOrdID <11> of the order you want to cancel. This must correspond to a currently outstanding order submitted during this trading session.

Gemini will cancel every active order whose ClOrdID <11> matches the value in this field.