Management should bridge volume, price and mix through material yield, scrap, rework, labour, energy, tooling, maintenance, freight, warranty, credit and collection by product and plant. Group margin can conceal output that absorbs inventory, receivables and sustaining capex.
Finance, commercial and operations use common programme definitions. The board sees whether variance comes from demand, throughput, yield, input, quality or cash timing. Transfer pricing and shared services remain visible so plant comparison does not reward shifted costs.
Plant-product variance remains tied to the customer programme that caused it, including expedited freight, rescheduling, supplier recovery and field action. Directors can therefore distinguish a temporary production issue from a structurally weak programme without relying on monthly factory averages. That attribution also gives commercial leaders evidence for pricing, recovery and customer renegotiation before another release.