ERP & MRP Planning worked example

Backlog Burn Down at 11% recovery schedule allowance: a worked example

Suppose recovery schedule allowance falls to 11%. This page works the full calculation at that level so you can see exactly which result moves and by how much. Estimate days needed to clear open backlog from backlog quantity, net daily output, and schedule allowance.

The inputs for this scenario

  • Open backlog quantity: 2,500 units (held at the documented default)
  • Net good output rate: 420 units / day (held at the documented default)
  • Recovery schedule allowance: 11 % (the input this scenario stresses; the baseline uses 15)

Working through the calculation

  • The calculation starts from the formula this tool documents: Base backlog burn-down time = open backlog quantity รท net good output rate.
  • Estimated backlog burn-down time works out to 6.61 days at these inputs, and this is the headline figure for the scenario.
  • Base backlog days at net output works out to 5.95 days at these inputs.
  • Recovery schedule allowance works out to 11 % at these inputs.
  • Net good output rate works out to 420 units / day at these inputs.

How this compares with the baseline

  • Against the tool's baseline example, where recovery schedule allowance sits at 15% and the headline result is 6.85 days, this scenario comes in 3.48% below the baseline at 6.61 days.
  • It divides open backlog by net good output rate for a base recovery time, then inflates it by a recovery schedule allowance to account for catch-up friction. When the numbers land here, the stressed input is the lever to work; the walkthrough above shows exactly how much each output recovers as it climbs back toward the baseline.

Results at a glance

  • Estimated backlog burn-down time: 6.61 days (headline result)
  • Base backlog days at net output: 5.95 days
  • Recovery schedule allowance: 11 %
  • Net good output rate: 420 units / day

Run it with your numbers

  • To rerun this with your own numbers, open the live Backlog Burn Down calculator, set recovery schedule allowance to your actual value, and adjust the remaining inputs to match your operation.

Last reviewed 2026-05-12.