I am on "Create an External Data Source and External Objects" module - tried in Lightening and Classic - in both cases the button just grayed out
5 answers
Steven Trumble (Strum Consulting) 
Forum Ambassador
Been a while since I've done this one. I think you just need to check the "select" checkboxes on the far left next to order and orderdetail, then you may be able to sync.
