Your products are blocked.
So is your GMV.
Thousands of errors come back from your marketplaces every day. But which ones are actually costing you sales? Synaps prices the blocked GMV, prioritises the products that pay, fixes them and puts them back online.
Read-only to start. No migration, no commitment.
Error scan · 8 of 6,412 products
Missed GMV detected in this sample: €6,610 per month
| Product |  Amazon |  ManoMano |  Cdiscount |  Leroy M. |  Carrefour |  Temu |
|---|---|---|---|---|---|---|
| Makita DHP484 drill | Live | Live | Live | Live | Blocked, €480 per month in missed GMV | Live |
| Kärcher K5 washer | Live | Blocked, €1,240 per month in missed GMV | Live | Live | Live | Blocked, €210 per month in missed GMV |
| Bosch front brake pads | Live | Not listed | Live | Not listed | Blocked, €620 per month in missed GMV | Live |
| Varta 70Ah car battery | Live | Not listed | Live | Not listed | Blocked, €890 per month in missed GMV | Blocked, €190 per month in missed GMV |
| Einhell cordless mower | Blocked, €2,350 per month in missed GMV | Live | Live | Live | Blocked, €340 per month in missed GMV | Live |
| JBL Tune 770NC headset | Live | Not listed | Live | Not listed | Blocked, €160 per month in missed GMV | Live |
| Dell 27-inch monitor | Live | Not listed | Live | Not listed | Live | Blocked, €130 per month in missed GMV |
| Philips Hue bulbs ×3 | Live | Live | Live | Live | Live | Not listed |
Scan complete: 10 listings blocked in this sample
The problem
A thousand errors. Ten channels.
Your products stay blocked.
Your tools and your marketplaces both report the errors, without telling you which ones are actually costing you sales.
Your stack
-
Feed integrator -
Repricer -
Agency -
Spreadsheets
The backlog
Everything is reported. Nobody triages it, except Synaps.
-
Mandatory attribute missing
Product offline Priority: High -
Image against the rules
Offer rejected Priority: Medium -
New rule not applied
Product invisible Priority: Medium -
Error open for 14 days
Still offline Priority: High -
Price out of sync
Offer unpublished Priority: Low
Your channels
- Amazon
- ManoMano
- Cdiscount
- Leroy Merlin
- Carrefour
- Temu
How it works
Connect. Prioritise. Unlock.
-
Step 1
Connect
Connect your marketplaces and your product catalogue: ERP, Shopify, or feed. Synaps starts read-only, with nothing changed in your environment.
15 minutes. Your tools stay where they are.
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Step 2
Prioritise
Synaps analyses the blocked products across every channel and prices the GMV behind each one, so you know which to fix first.
Not a thousand errors. The forty that pay.
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Step 3
Unlock
Synaps fixes what blocks your products, then our listing factory puts them back online, to each marketplace’s own requirements.
You set the tempo. We execute.
Beyond assortment
Assortment gaps are just the beginning.
Once Synaps sees your business across every channel, the same engine finds every euro you’re leaving on the table.
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Pricing gaps
You’re losing the buybox by cents. We tell you where, against whom, and by how much.
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Consistency gaps
Your channels contradict each other on price, content or stock. We reconcile them.
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Commission gaps
Marketplaces overcharge fees and penalties more often than you think. We audit every line and claim back what’s yours.
Every action tied to a number. Every number provable on your ledger.
Why Synaps
Built for serious sellers.
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500,000+
listings created every month by the Synaps listing factory
-
50+
channels live, including Amazon, ManoMano, Cdiscount and Carrefour
-
200k+
products managed for a single seller, built for catalog scale
Already on Lengow or Channable? Keep them.
Feed managers move your catalog. Synaps finds what your catalog is missing, and fixes it. We sit above your feed manager, not instead of it.
How much GMV is sitting blocked?
Get a free gap scan of your catalog. In days, not weeks: your blocked products, ranked by the GMV they are costing you. No commitment, no migration.
Measure my blocked GMV