OOS (Out of Stock) is a situation where a product is unavailable for order or delivery has deteriorated to the point where conversion drops to nearly zero. On Mercado Libre, this often looks the same: everything was fine yesterday, today the listing has “dropped,” ads are burning through the budget, sales are declining, and you suddenly realize that the product is out of stock or has been sent to the wrong warehouse.
This article provides a specific 24-hour plan to:
- stop sales and advertising budget losses,
- quickly restore product availability,
- minimize position and organic drops,
- prepare for traffic return after restocking.
What is Considered OOS (and Why Sometimes "There Are Stocks," But It's Still OOS)
OOS is not just “0 in stock.” Practically, it can be:
- zero stock at the key warehouse (and cannot be purchased),
- stock exists, but delivery has become slow → conversion drops,
- stock exists, but the product is unavailable due to restrictions/statuses/receiving,
- stock is spread across warehouses, while the main flow of traffic/purchases comes from where there is no stock left.
The main criterion: the buyer sees “long/unavailable” and leaves.
Symptoms of OOS That Are Seen First
- sharp drop in sales with normal traffic
- increase in DRR (ads are spending, revenue is lower)
- drop in listing conversion (CR)
- deterioration in delivery time in search/listing
- “strange” cancellations or product unavailability
OOS Action Plan for 24 Hours: What to Do Right Now
0–30 Minutes: Stop the Money Leak
Goal: do not buy clicks “into the void.”
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Pause ads on SKU in OOS
- especially broad campaigns and anything that drives demand
- only “protective” campaigns should be kept if the product is actually available (not “delivery in 12 days”)
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Check for any auto-rules/auto-strategies that might turn traffic back on
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Record “before OOS”:
- sales/day, DRR, CR (for the last 7 days) This will be useful for recovery.
Mistake #1: continuing to run ads while the product is unavailable. This almost always guarantees budget drain and metric deterioration.
30–90 Minutes: Understand “Where the Product Is” and Why the Buyer Cannot Purchase
Goal: localize the cause of OOS.
Check by SKU:
- Stock levels by warehouse: where there is stock, where there is zero
- Availability for order: “can it be purchased now?”
- Delivery time: what the buyer sees
- Product statuses: is it blocked, is it on receiving/in processing
- Variations: OOS may only apply to a specific size/color
Divide the situation into types:
- Type A: product is genuinely out of stock (0 stock)
- Type B: product is available, but not selling due to delivery/warehouse issues
- Type C: product is available, but unavailable due to status/restrictions/receiving
Next steps will differ based on the type.
1.5–4 Hours: Quick Actions to Restore Availability
Type A: Product is Out of Stock (0 Stock)
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Clarify the fastest restocking:
- is there stock at another warehouse/with you/with the supplier
- can expedited shipping be arranged
- what are the actual receiving timelines
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If possible — activate a “temporary demand substitute”
- redirect ads to similar SKUs/sets
- to avoid losing overall turnover
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If the product is a Hero SKU (most profitable/turnover):
- escalate restocking as aggressively as possible (within the team/logistics)
- this usually pays off.
Type B: Stock Exists, But Delivery Has Become Poor
This is a very common cause of “hidden OOS.”
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Check: stock levels at the key warehouse (where purchases are usually made)
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If stock is only “far away,” consider:
- can it be redistributed (if the model allows)
- can delivery to the necessary warehouse be expedited
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During the delivery deterioration period:
- keep ads only on exact queries (or turn them off if CR has dropped significantly)
- do not drive demand while delivery is poor
Type C: Status/Receiving/Restrictions
- Check the reasons: documents, labeling, restrictions, errors in the listing, limits
- Escalate to support/operations if needed
- If the problem is not resolved quickly — shift the budget to other SKUs.
4–8 Hours: Protect the Listing and Positions (Minimize “Drop After OOS”)
Goal: so that after recovery, you don't have to “dig out for a month.”
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Do not make drastic changes to the listing simultaneously with OOS If you simultaneously:
- went OOS,
- changed the price,
- changed the photo,
- restructured ads You won’t understand what worked and what broke conversion.
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Check the basics:
- price in search relative to competitors
- rating/reviews (is there any recent negative feedback)
- correctness of variations (so that after restocking, the buyer sees the desired option)
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Prepare a “soft traffic return plan” (below)
8–24 Hours: Recovery Plan (When the Product is Back)
As soon as the product is available again with normal delivery:
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Do not turn on ads at full power immediately Start gradually:
- day 1: exact queries, best campaigns, moderate budget
- day 2–3: expansion, gradual increase of bids/limits
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Monitor in the first 24 hours:
- listing CR
- DRR / cost per order
- delivery time
- stock levels (to avoid going OOS again)
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If conversion after return is lower than “before OOS”:
- check delivery (often it has not fully recovered yet)
- check position in search and price competitiveness
- check reviews/rating
What to Do with Ads During OOS (Very Specifically)
If the product is unavailable for order (real OOS)
- turn off ads
- shift budget to substitute SKUs
If the product is available, but delivery has become long
- turn off broad campaigns
- keep only exact/brand campaigns (if it makes sense) with minimal limits
- goal: do not drive demand while CR is low
If restocking is expected within 24–48 hours
- it’s better to keep ads minimal or on pause until normal delivery is restored Otherwise, you are “buying” poor metrics and worsening DRR.
OOS Checklist: 10 Questions to Address Within 24 Hours
- Is the product really unavailable? (0 stock or poor delivery)
- Where is the stock by warehouse?
- What does the buyer see regarding delivery time?
- Why has the product become unavailable (stock/receiving/status)?
- When will availability realistically be restored? (hour/day/week)
- Is the ad that is draining into the void turned off?
- Is there a substitute SKU to which the budget can be shifted?
- Is there a risk of repeat OOS after restocking?
- Are there any changes in price/competitors/reviews that will lower CR after return?
- Is there a “soft traffic return” plan for 3 days?
Common Mistakes During OOS
- continuing to run ads “because you need to maintain positions”
- not distinguishing between “0 stock” and “poor delivery” (hidden OOS)
- turning ads on to maximum immediately after restocking → back to OOS
- simultaneously changing price/listing/ads and then not understanding the cause of the drop
- not having safety stock and reorder point (what prevents OOS)