How do you calculate a Routing Accuracy Score?

Multiply the severity, occurrence, and detection ratings together. With severity 6, occurrence 4, and detection 3 the raw product is 72, normalized to a 4.55 score on this calculator's scale.

What is a good Routing Accuracy Score?

Lower is better. There is no universal threshold; set an action limit relative to your other routings — for example, address any score in your top quartile or anything where severity alone is high regardless of the product.

Severity vs occurrence vs detection — what's the difference?

Severity is how badly a wrong routing hurts (scrap, late orders, mis-costing); occurrence is how often the error happens; detection is how likely you are to catch it before it impacts an order — a high detection rating means it is hard to catch.

Why use multiplication instead of adding the three ratings?

Multiplication makes a failure that is severe, frequent, and hard to detect dominate the ranking, which is the FMEA intent. Adding would let a single high rating be averaged away by two low ones.

Can I compare Routing Accuracy Scores across different products?

Only if every routing uses the same rating scale and rating definitions. The score is meaningful as a relative priority within a consistently scored set, not as an absolute number across unrelated scales.

How do I lower a high routing-accuracy risk score?

Attack the highest of the three drivers: tighten standard-time review to cut severity impact, add validation rules to cut occurrence, or add a routing audit step to improve detection.

Manufacturing Master Data & Data Governance calculator

Routing Accuracy Score Calculator

The Routing Accuracy Score is an FMEA-style risk priority number for defects in manufacturing routings — wrong work-center assignments, bad standard times, missing operations, or stale setup data. Manufacturing engineers, ERP master-data owners, and continuous-improvement teams use it to rank which routing problems to fix first. It matters because a single inaccurate routing distorts capacity planning, scheduling, and product cost across every order that uses it. By scoring severity, occurrence, and detection on a common scale, you replace gut feel with a defensible priority ranking.

What this calculator does

Estimate routing accuracy for manufacturing master data and data governance using production-ready inputs so teams can rank risks and decide which issue needs containment, controls, or escalation first.
Use it when routing accuracy in manufacturing master data and data governance needs a defensible ranking against other manufacturing master data and data governance risks for the next review.
It multiplies severity, occurrence, and detection ratings into a single risk priority number for a routing-accuracy failure mode.

Formula used

Routing accuracy risk score = routing accuracy severity score × routing accuracy occurrence score × routing accuracy detection score
Use the same scoring scale across comparable routing accuracy risks.

Inputs explained

Routing error severity rating:
Routing error occurrence rating:
Routing error detection rating:

How to use the result

Use it during a routing FMEA, a master-data audit, or when triaging which routing defects to correct first.
It is a relative ranking, not an absolute risk; two routings with the same product can earn the same score through very different combinations, so always review the underlying ratings.

Common questions

How do you calculate a Routing Accuracy Score? Multiply the severity, occurrence, and detection ratings together. With severity 6, occurrence 4, and detection 3 the raw product is 72, normalized to a 4.55 score on this calculator's scale.
What is a good Routing Accuracy Score? Lower is better. There is no universal threshold; set an action limit relative to your other routings — for example, address any score in your top quartile or anything where severity alone is high regardless of the product.
Severity vs occurrence vs detection — what's the difference? Severity is how badly a wrong routing hurts (scrap, late orders, mis-costing); occurrence is how often the error happens; detection is how likely you are to catch it before it impacts an order — a high detection rating means it is hard to catch.
Why use multiplication instead of adding the three ratings? Multiplication makes a failure that is severe, frequent, and hard to detect dominate the ranking, which is the FMEA intent. Adding would let a single high rating be averaged away by two low ones.
Can I compare Routing Accuracy Scores across different products? Only if every routing uses the same rating scale and rating definitions. The score is meaningful as a relative priority within a consistently scored set, not as an absolute number across unrelated scales.

Last reviewed 2026-05-12.