Thanks for taking the time to post on our forum! To make sure I am understanding the request correctly, are you referring to the Order CSV upload?
Currently, that upload requires Item Name and the SKU is an additional option that can be attached.
Are you wanting the SKU field to replace the Item Name or in addition?
My only concern is that some merchant and store platforms do not require a SKU, so this field is left out as a 'required' field, but still an additional data field option for the CSV uploads.
Is there a suggested workaround for merchants that do not have a SKU?