Order Key - Do not allow duplicate orders

Hi, we are using Celigo to send orders over your API and everything is working well, except in odd senarios an order can be sent twice. In Shipstation, there is the idea of an order key that we set. We use the internal ID of the record in netsuite. Shipstation does not allow a duplicate shipment to be created with the same order ID.

Is there a way to do this in Easyship?