Hi Heather,
Purchase Orders for Adagio can receipt Bar Codes as part of receiving Inventory into PO's.  POA can allocate the receipt to Inventory and/or to Job Costing.
If you were to use the RF Pathways solution to bar code your client's inventory, the shipments from inventory could be picked and assigned to a Job, and transferred from inventory to the Job from their WMS solution.  The WMS solution also integrates directly into the Purchase Orders for Adagio.  
RF Pathways provides a turnkey solution including the hardware, setup, and training for their WMS solution with integration into Adagio.
Call us if you need more details. 
Regards,
Brian