This article reviews options for order comments during the checkout process and how these are populated in the integrated ERP system.
There are two comment types available by default, Shipment Comment, and Fulfilment Comment. Base sites only have one shipment per order, but there are add-ons that allow for multiple shipments (based on shipping methods, warehouses, or ship tos). The default set-up is to display the shipment comments section and hide the fulfillment comment. In Sage100 if either or both comments are enable they will go into Sage as comment lines (/C) on the order due to the Sage limitation of 30 characters on the order header comment. Other ERPs can typically be done this way or use existing comment fields. This is highly dependent on the ERP.
Modifying which field displays can be done in the Application or Customer Site settings. In the Quotes/Ordering Section you can enable the feature Order Comment Settings. Under this are feature settings that allow you to turn on/off these particular fields and to edit the title/label for these comments.