ERP & MRP Planning worked example

Production Order Release Quantity with net demand to cover of 490 units: a worked example

This worked example runs the production order release quantity numbers for a tougher week than the baseline: net demand to cover of 490 units instead of the typical 980 units. Estimate production order release quantity from net demand, expected yield, and lot-size rounding factor.

The inputs for this scenario

  • Net demand to cover: 490 units (the input this scenario stresses; the baseline uses 980)
  • Expected yield divisor: 0.94 x (held at the documented default)
  • Lot-size rounding factor: 1.05 x (held at the documented default)

Working through the calculation

  • The calculation starts from the formula this tool documents: Release quantity = net demand to cover ÷ expected yield divisor × lot-size rounding factor.
  • Production order release quantity works out to 547 units at these inputs, and this is the headline figure for the scenario.
  • Yield-adjusted demand quantity works out to 521 units at these inputs.
  • Lot-size rounding factor works out to 1.05 x at these inputs.
  • Expected yield divisor works out to 0.94 x at these inputs.

How this compares with the baseline

  • Against the tool's baseline example, where net demand to cover sits at 980 units and the headline result is 1,095 units, this scenario comes in 50% below the baseline at 547 units.
  • Use it at order release, after MRP nets demand against stock, on any process where yield loss or lot-size rules apply. A result at this level usually justifies acting on the stressed input before touching anything else, because every other figure in the table is downstream of it.

Results at a glance

  • Production order release quantity: 547 units (headline result)
  • Yield-adjusted demand quantity: 521 units
  • Lot-size rounding factor: 1.05 x
  • Expected yield divisor: 0.94 x

Run it with your numbers

  • To rerun this with your own numbers, open the live Production Order Release Quantity calculator, set net demand to cover to your actual value, and adjust the remaining inputs to match your operation.

Last reviewed 2026-05-12.