Compare returns and waste using the same denominator

Sort causes by product, route and event type, then compare returns against shipped quantity for equivalent periods.

23 March 2022Updated 23 September 2026

Short answer

First split returns and waste by product, route, date and reason code. Calculate a rate by dividing returned quantity by quantity shipped in the same scope; align periods, product groups and units. Show missing or differently classified records separately. A cluster suggests where to investigate but does not by itself prove cause or responsibility.

When returns and waste rise, first make the rate comparable. A count alone can mislead when shipment volume or product mix has changed.

Standardise the record fields

For each event, record product and lot, store or route, date and time, returned quantity, shipped quantity and reason code. If the cause is unknown, mark it “under review” instead of guessing. Track damage, date, temperature record and order error separately.

For a period rate, use consistent units: returned units divided by shipped units, or returned kilograms divided by shipped kilograms. Do not compare periods directly if the date range, product group or scope differs. Show denominator changes and missing records in the report.

If one product, route or time window shows an increase, sample its shipment and quality records. The pattern tells you where to investigate; it does not by itself prove equipment or staff fault. After making a correction, monitor again with the same metric definition.

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Topics:Risk and emergencies Food quality and shelf life

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