OATS Connection ID

The OATS technical specification allows for an optional connectionId field to be included in your OATS feeds for the purposes of improving your order ID uniqueness. When creating OATS rows related to your FIX transmissions to Cboe, Cboe recommends populating the OATS connectionId field with the senderSubId (FIX Tag 50). Please note that this field is optional on your OATS rows, and Cboe is not recommending a perspective that you do or do not populate the field. Also note that while not enforced internally, the Cboe spec does require that your client order ID be day-unique; Cboe continues to recommend this as the best way to meet OATS’ day-unique order ID requirements.