Might have to establish a budget. You can always buy something, or attempt to write it in-house. Or sub-con.
I've never looked in MRP/ERP systems, but I wonder if they have hooks for that already. If you are part of a larger business and already have such a system, I'd look there and see if there is a plugin that does what you need.
2011 Toyota Camry, base, 2.5L/6MT, 200k, hers
2010 Toyota Tundra DC, 4.6L/6AT, 157k, ours
1999 Toyota Camry LE, 2.2L/4AT, 220k, his