Advanced Planning, Scheduling & APS worked example

Schedule Adherence Cost Impact at 86% schedule-attributable share: a worked example

What does the result look like when schedule-attributable share reaches 86%? The full calculation is worked below with real intermediate numbers. a master scheduler needs to quantify the business impact of missed scheduled completions

The inputs for this scenario

  • Missed scheduled orders or hours: 18 orders or hr (unchanged)
  • Cost per schedule miss: 320 $ / miss (unchanged)
  • Schedule-attributable share: 86 % (raised for this scenario; the documented default is 75)
  • Expedite and replanning cost: 850 $ (unchanged)

Working through the calculation

  • Applying the documented formula (Adherence-attributable impact = missed scheduled orders or hours × cost per miss × schedule-attributable share) to the inputs above produces each figure below.
  • At this operating point the engine returns 5,804 $ adherence impact for schedule adherence cost impact, the number this scenario is built around.
  • At this operating point the engine returns 322 $ / miss for cost per schedule miss.
  • At this operating point the engine returns 4,954 $ adherence impact for adherence-attributable impact.
  • At this operating point the engine returns 850 $ for expedite and replanning cost.

How this compares with the baseline

  • Against the tool's baseline example, where schedule-attributable share sits at 75% and the headline result is 5,170 $ adherence impact, this scenario comes in 12.26% above the baseline at 5,804 $ adherence impact.
  • A figure at this level is achievable when schedule-attributable share is genuinely sustained, not just peaked for a shift. The schedule-attributable share is a judgment call; if you over-attribute misses to scheduling when the real cause was a supplier or quality problem, the number overstates the planning case.

Results at a glance

  • Schedule adherence cost impact: 5,804 $ adherence impact (headline result)
  • Cost per schedule miss: 322 $ / miss
  • Adherence-attributable impact: 4,954 $ adherence impact
  • Expedite and replanning cost: 850 $

Run it with your numbers

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

Last reviewed 2026-05-12.