Support idempotent key / unique token for order create REST API

[Preddy]

Hi,

Are there plans to support an idempotent key / unique token for the order create REST api end point?  We have run into issues where we receive a 502 Bad Gateway response when creating an order but the order was still created on Shopify.  If we can provide an idempotent key this should help prevent us from creating multiple orders for the same request.

Thanks,

Patrick