PLM, BOM & Digital Thread worked example

BOM Accuracy Score with bom error severity of 15 score: a worked example

What does the result look like when bom error severity reaches 15 score? The full calculation is worked below with real intermediate numbers. Use it when bom accuracy in plm, bom and digital thread needs a defensible ranking against other plm, bom and digital thread risks for the next review.

The inputs for this scenario

  • BOM error severity (impact if it reaches build): 15 score (raised for this scenario; the documented default is 6)
  • BOM error occurrence (how often it slips in): 4 score (unchanged)
  • BOM error detection difficulty (how hard to catch): 3 score (unchanged)

Working through the calculation

  • Applying the documented formula (Bom accuracy risk score = bom accuracy severity score × bom accuracy occurrence score × bom accuracy detection score) to the inputs above produces each figure below.
  • At this operating point the engine returns 8.15 score for bom accuracy risk score, the number this scenario is built around.
  • At this operating point the engine returns 15 score for bom accuracy severity score.
  • At this operating point the engine returns 4 score for bom accuracy occurrence score.
  • At this operating point the engine returns 3 score for bom accuracy detection score.

How this compares with the baseline

  • Against the tool's baseline example, where bom error severity sits at 6 score and the headline result is 4.55 score, this scenario comes in 79.12% above the baseline at 8.15 score.
  • A figure at this level is achievable when bom error severity is genuinely sustained, not just peaked for a shift. RPN is ordinal — a score of 4.55 is not literally twice as bad as 2.3 — and can hide a critical severity behind low occurrence and detection, so always review high-severity items regardless of total.

Results at a glance

  • Bom accuracy risk score: 8.15 score (headline result)
  • Bom accuracy severity score: 15 score
  • Bom accuracy occurrence score: 4 score
  • Bom accuracy detection score: 3 score

Run it with your numbers

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

Last reviewed 2026-05-12.