Your IDU is not on Amazon.
7 reasons it happens and how to fix each one.

Before retrying or contacting Amazon, do this one check. Go to syderep.ademe.fr and search for your IDU. If it appears, copy the legal name exactly as displayed. If it does not appear, you are not actually registered yet from Amazon’s perspective — every IDU diagnosis starts here.

Amazon verifies your IDU by querying SYDEREP, the public registry maintained by ADEME. The platform does not call the eco-organism, does not check internal documents, and does not look at your filings. If SYDEREP does not return a match, Amazon rejects. The 7 reasons below all reduce to a SYDEREP-side problem or an Amazon-side data entry problem.

1. The IDU is not yet published on SYDEREP

The most common cause. Your eco-organism (Citeo, Refashion, Ecosystem…) confirmed registration by email, sometimes even gave you the IDU number, but ADEME has not yet imported the dossier into the public SYDEREP teleservice. The import runs in weekly batches. Gap is typically 5 to 10 business days from eco-organism approval to SYDEREP publication.

Fix: Wait. Search SYDEREP weekly until the IDU appears. Do not retry uploading on Amazon during the wait — repeated failed attempts can flag your account.

2. The legal name on SYDEREP does not match Amazon Seller Central

Your Amazon legal entity reads “Acme Limited”. SYDEREP reads “ACME LIMITED HK” (the eco-organism added a country suffix). The string comparison fails. Same root cause as on Cdiscount.

Fix: Update your Amazon Seller Central business name to match SYDEREP exactly. Changing SYDEREP is slower (requires re-filing with the eco-organism). It is almost always faster to edit the Amazon side.

3. You uploaded a packaging IDU but the listing also needs WEEE or batteries

Amazon parses your listing taxonomy and demands one IDU per applicable stream. A Bluetooth speaker triggers packaging (the box) + WEEE (the electronics) + batteries (the embedded battery). Three IDUs, three filings. Sellers regularly upload one IDU thinking it covers everything.

Fix: Audit your catalog against the 10 EPR streams. File a separate dossier with each relevant eco-organism. The representative mandate covers any number of streams under one umbrella.

4. You pasted the IDU into the wrong field in Seller Central

Amazon has stream-specific fields under Compliance → Extended Producer Responsibility. You must paste the IDU into the field matching that stream — pasting a Citeo packaging IDU into the WEEE field returns “invalid”. Amazon checks not only that the IDU exists but that it covers the right stream.

Fix: In Seller Central, go to Settings → Compliance → EPR France. Confirm each IDU is in the correct stream row before saving. The IDU prefix (the first 4 characters) typically signals the stream — your representative can map them for you.

5. Amazon cache lag (24-72 hours)

After you submit a valid IDU, Amazon caches its SYDEREP lookup. Cache flushing is asynchronous, typically 24 to 72 hours. Your listings will not re-activate instantly even on a successful submission.

Fix: Wait 3 business days. If listings are still down on day 4, open a case in Seller Central referencing the IDU and ASKING for cache refresh. Templates and timelines in our Amazon suspension recovery guide.

6. The IDU was revoked

IDUs are not permanent. The eco-organism can revoke your IDU if you miss an annual declaration, fail to pay eco-contributions, or breach your mandate. SYDEREP updates within a week of revocation. Amazon then returns “IDU not found” on a number it accepted six months ago.

Fix: Contact your eco-organism (or your representative) to understand which obligation triggered the revocation, then settle it. The IDU is typically restored within 5 business days after the obligation is met. Note: this is a known pain point — set up calendar reminders for annual declarations (usually due 28 February for the previous year’s tonnage).

7. You operate multiple Amazon seller accounts on the same IDU

Each legal entity gets one IDU per stream. If you operate two separate Amazon Seller Central accounts under two different legal entities, you need two registrations — one IDU per entity per stream. Reusing the same IDU across entities will pass on one account and fail on the other.

Fix: File a separate registration for each legal entity. The representative can group them under one mandate but the eco-organism dossiers are separate.

Diagnostic checklist

If three or more of these come back unclear, the fastest path is a 20-minute call with a representative who can read your SYDEREP record and tell you within minutes which item is breaking the verification. See our pricing or contact us with the rejection screenshot.