PPOOS (Procurable Product Out of Stock)

Amazon & D2C glossary · Harpy Media

PPOOS (Procurable Product Out of Stock) is the vendor metric for the share of customer views that land on an out-of-stock detail page for products the platform is still actively trying to source: glance views on unavailable, replenishable items as a percentage of total views.

What is PPOOS?

PPOOS (Procurable Product Out of Stock) is the vendor metric for the share of customer views that land on an out-of-stock detail page for products the platform is still actively trying to source: glance views on unavailable, replenishable items as a percentage of total views.

It is the most painful category of stockout, because demand existed and supply failed. A discontinued line going dark is a decision; a product the platform wanted to order running out is a lost opportunity — and the metric quantifies exactly how much potential revenue was thrown at an empty page.

Why this metric is worth more attention than most

Traffic is expensive to create and impossible to bank. Every view that lands on an unavailable listing is a shopper who was interested and found nothing — and they do not wait; they buy a competitor’s version. The sale is lost, but so is the ranking signal the sale would have produced, which makes the damage compound rather than stop.

Watch it closely enough and it becomes a leading indicator of account health. Consistently high PPOOS signals demand planning that cannot keep pace with the catalogue — and the platform responds to that by favouring suppliers whose products are reliably available. Purchase orders migrate, volumes move, and the cause of the shift is a metric the vendor was not reading.

Reading it and fixing what it reveals

The measurement is straightforward: out-of-stock glance views on replenishable items divided by total glance views, expressed as a percentage. Discontinued and obsolete items are excluded, because the metric is specifically about inventory the platform wants and cannot get.

Fixing it is a supply-chain exercise, not a marketing one. Where the spikes cluster around weekends or demand events, the fix is safety stock sized for peaks rather than averages. Where they cluster around promotions, the fix is telling the system and the supply chain what is coming — vendor-initiated orders ahead of off-platform campaigns, and lead times that reflect how demand actually behaves. The metric is the alarm; the work happens upstream.

In practice

A vendor supplying a fast-moving personal care line sees 10,000 views on a listing in one week, with 2,000 of them landing while a replenishment delay had the product unavailable — a 20% out-of-stock rate on a procurable item. The number feeds straight back into planning: lead times lengthen against reality, safety stock grows to cover weekend demand spikes, and the following month’s figure drops without any change to marketing.

How Harpy Media helps

Availability and demand planning are part of our vendor operations: out-of-stock incidents read as planning signals, safety stock sized to real demand patterns, and promotional volumes communicated upstream before the traffic arrives.

PPOOS FAQ

What is PPOOS?

Procurable Product Out of Stock — a vendor metric measuring the percentage of customer views landing on out-of-stock detail pages for products that remain replenishable and are still being actively sourced.

How does PPOOS differ from a normal out-of-stock rate?

It focuses on procurable items — products the platform wants to order. Discontinued lines are excluded, because the metric is about missed demand rather than deliberate withdrawal.

How do I reduce it?

Improve the supply chain rather than the listing: safety stock sized for demand peaks, lead times based on actual shipping experience, and vendor-initiated orders ahead of promotions. Availability failures are planning failures.