I am a massive fan of MRP; I think it is the engine that drives all the magic of an ERP. First, set up the master data, including styles, RMs, BOMs, vendors, lead times. Next, place orders or forecasts (again, these can be interfaced, EDI’d, or uploaded, no need for manual keying in). Press the shiny MRP button, and the system does all the production and procurement math for you.
It looks at all the demand and supply in the system:
- Stock sitting in warehouses, both finished goods and raw materials
- Manufacturing orders and purchase orders expected to be received and when to expect them
- Customer orders and forecasts that were placed previously and the delivery dates of those orders
It then calculates how much should be bought, how much should be made, and for what dates. It is extra clever because it looks across the different levels of the BOM and does this magic not just for the top level, which is the style, but also for the lower levels, the RMs.
It can be configured with all manner of bells and whistles such as assigning suppliers and prices, considering minimum order quantities, and considering approved product substitutes.