ERP & MRP Planning worked example

Schedule Attainment at 99% target schedule attainment: a worked example in erp & mrp planning

Push target schedule attainment up to 99% and the picture changes. This example computes every intermediate figure at that operating point. a supervisor needs to measure completed schedule versus the committed plan

The inputs for this scenario

  • Scheduled units completed on time: 1,840 units (unchanged)
  • Total scheduled units: 2,000 units (unchanged)
  • Target schedule attainment: 99 % (raised for this scenario; the documented default is 95)

Working through the calculation

  • Applying the documented formula (Schedule attainment = scheduled units completed on time ÷ total scheduled units × 100) to the inputs above produces each figure below.
  • At this operating point the engine returns 92 % for schedule attainment, the number this scenario is built around.
  • At this operating point the engine returns 7 points for schedule attainment gap to target.
  • At this operating point the engine returns 1,840 units for scheduled units completed on time.
  • At this operating point the engine returns 2,000 units for total scheduled units.

How this compares with the baseline

  • Against the tool's baseline example, where target schedule attainment sits at 95% and the headline result is 92 %, this scenario lands almost exactly on the baseline at 92 %.
  • It computes the percentage of scheduled units finished on time against the total units the schedule called for, plus the point gap to your attainment target. The value of this scenario is the size of the gap it exposes: that gap, priced out over a year, is the budget you can justify spending to close it.

Results at a glance

  • Schedule attainment: 92 % (headline result)
  • Schedule attainment gap to target: 7 points
  • Scheduled units completed on time: 1,840 units
  • Total scheduled units: 2,000 units

Run it with your numbers

  • Every input above is editable in the live Schedule Attainment calculator, which recalculates instantly and can be shared with the inputs intact.

Last reviewed 2026-05-12.