Accolent ERP allows you to create a Special Order for non-inventory items and automatically create a linked PO. When confirmed, the Special Order is held as a Back Order until the goods are received from the vendor. The Special Order linkage can be created from either the sales side creating the Order then linking a PO or from the PO side and then linking the Order.
Click the image to expand the workflow for the Special Order Process in Accolent ERP:
