Orders should contain name, marker and/or external ID when fetched from ERP connect (GET endpoint and webhooks).
When creating the order in an external system (typically an ERP) we need to include some information regarding the applied discount. This can be then be used for follow-up of campaigns etc. There are currently three fields to identify a discount (Name, Marker and External ID), however none of them seems to be included on the exported order. Including any of them (or even better all) on orders in ERP connect would be a good way of identifying the campaign that gave the reduced price.