Bundeskartellamt proceedings and sellers: the response checklist

When a platform-related regulatory investigation gathers pace in Germany, the ripple effect reaches sellers across every Amazon marketplace in the EU – including Amazon ES. Listings can be suspended, ranking treatment can shift, and terms can change with little direct explanation to the sellers affected. The opportunity cost is immediate: sales stop, inventory sits, and cash flow gaps open while the procedural picture remains unclear.

TL;DRBundeskartellamt proceedings against a major marketplace operator can directly affect sellers on Amazon ES when the German authority's findings or interim orders lead Amazon to adjust its practices across EU surfaces. Sellers have rights under the Platform-to-Business (P2B) Regulation, the Digital Services Act (DSA), and the Digital Markets Act (DMA) to receive reasoned explanations, to contest suspensions internally, and to escalate externally – and those rights exist even when the underlying proceeding is between a regulator and the platform, not the seller.

This checklist runs phase by phase: from the moment you notice an unexplained change on Amazon ES, through the procedural steps to protect your position, to the decision points about escalation. Each phase is sequenced so you can act on it immediately, without waiting for the regulatory picture to resolve fully.

Phase 1: Confirm what is actually happening and why

The first job is to distinguish a platform-side regulatory adjustment from an account-level enforcement action – because the response strategy differs materially depending on the source.

Regulatory adjustments flowing from Bundeskartellamt proceedings tend to appear as broad policy changes: altered ranking rules, changed terms in the Business Solutions Agreement (BSA), or modified access conditions applied across many sellers at once. An account-level enforcement action, by contrast, targets one seller and typically cites a policy violation. Conflating the two leads to the wrong response.

• Check Seller Central for any account health notification, suspension notice, or policy-violation email. Note the exact wording and date.
• Check Amazon's Seller Central news feed and any bulk-seller communications for announcements of policy or terms changes on Amazon ES.
• Review your Seller Central Performance dashboard for any change in account status, listing visibility, or account health rating.
• Note whether the change affects a single ASIN, a category, or your whole account – scope signals the source.
• Retrieve and save the full text of any notice: do not rely on a summary email, go to the source notice in Seller Central.

Why this matters: under the P2B Regulation, a platform is required to provide a statement of reasons before restricting or suspending a seller's access to its service. If you have not received one, that is itself a compliance failure by the platform – and the first piece of leverage you should document.

What are the DSA and P2B rights sellers can use right now?

Sellers on Amazon ES have enforceable rights under EU law that remain in force regardless of what any Bundeskartellamt proceeding resolves.

The P2B Regulation applies to all business users of online intermediation services in the EU. It requires platforms to give at least 15 days' notice before imposing a restriction or suspension (except in specified urgent cases), and to explain the reasons in a durable medium. Amazon's internal complaint-handling system – which it maintains as a P2B obligation – must be accessible and must provide a genuine response to a substantiated complaint. Sellers often overlook this route, assuming it is performative. In matters we handle, a well-documented internal complaint frequently produces the first substantive explanation from the platform.

The DSA imposes obligations on Amazon as a Very Large Online Platform (VLOP). Under the DSA, sellers who are subject to a content moderation decision – including the removal of listings – have the right to receive a clear statement of reasons and to challenge the decision through Amazon's internal redress mechanism. That right is not contingent on the seller proving the decision was wrong; it is triggered by the decision existing.

The DMA creates gatekeeper obligations for Amazon in its capacity as a designated core platform service. Sellers benefit from these indirectly: Amazon is prohibited from treating its own competing services more favorably than third-party sellers and must give sellers access to data generated by their use of the platform. These are slower levers, but they are part of the structural background that makes Bundeskartellamt-type proceedings relevant to seller rights in the first place.

• Identify which EU legal instrument applies to your specific complaint: P2B for terms and suspension, DSA for listing removal, DMA for ranking and data access.
• Confirm that Amazon ES operated as the contracting platform and that your account is registered for EU trading – this affects which national authority and which enforcement route applies.
• Document any failure to receive a P2B-compliant statement of reasons as a separate point to raise in any complaint or escalation.
• Locate the Amazon internal complaint-handling system (accessible through Seller Central under the account health or contact section) and note the reference numbers for any cases you open.

The wider context matters here. For an in-depth explanation of how these instruments interact across EU surfaces, the guide on EU marketplace regulation for sellers covers the regulatory architecture that underpins every phase of this checklist.

Phase 2: Document your position before responding

Before you file any appeal or complaint, build a contemporaneous record. The window to gather clean evidence is short once an account review or suspension is in motion.

Documentation discipline is one of the areas where sellers working alone most often fall short. The impulse is to respond immediately. The better move is to spend one to two business days assembling the full picture, because a rushed appeal that omits critical evidence rarely recovers the omission in a later submission.

• Export your Amazon ES account health report, account level reserve report, and all performance notifications from at least the previous 12 months.
• Save screenshots of every affected listing with the current status, including any suppressed or inactive flag, dated and time-stamped.
• Preserve all correspondence from Amazon: every Seller Central message, every email, every notification. Store them outside Seller Central in case access changes.
• Record your current inventory position, any open FBA removal orders, and outstanding balances or reserves held by Amazon ES – these are the commercial exposure figures you will need for any formal escalation.
• Note the timeline: when the change first appeared, when you were first notified (if at all), and when you first raised a query with Seller Support.
• If the change is linked to a category-wide or terms-wide adjustment, gather any publicly available information about the Bundeskartellamt investigation – press releases from the authority, Amazon's own public statements – but do not treat them as a substitute for your own account record.

We regularly see sellers file appeals that rely on memory rather than documents. When the platform's review team can point to gaps in the record, those gaps tend to close the matter against the seller. A complete contemporaneous record shifts that burden.

Phase 3: File the internal complaint and the P2B-based appeal

The internal complaint-handling system is a mandatory procedural step under P2B before external escalation becomes available in most EU jurisdictions.

Filing a strong internal complaint is not a formality. It creates a formal record of the platform's response (or non-response), establishes that you have exhausted the internal route, and in some cases produces a resolution without further escalation. The complaint should be specific, not generic.

• Open a case in Amazon's internal complaint-handling system, not through ordinary Seller Support chat. Use the specific complaint route designated for P2B business user complaints – the path differs from a standard performance appeal.
• In the complaint, cite the P2B Regulation by name and state that Amazon has not provided a compliant statement of reasons as required by that regulation.
• Set out the facts: the date of the restriction, the scope, the commercial impact (quantified where you have the data), and the absence of prior notice.
• Attach all relevant documentation from Phase 2 as exhibits to the complaint – treat it as a legal submission, not a customer service ticket.
• Request a written response with a substantive explanation, not a template reply. Note the date you filed and record the reference number.
• If no substantive response is received within the platform's stated timeline, document that non-response – it becomes part of the external escalation record.

What does a well-formed P2B complaint actually contain? At its core: a clear statement of the restriction, the legal basis for your right to a reasoned explanation, the specific gap in what the platform has communicated, and a concrete ask. It does not need to prove that Amazon was wrong – only that it failed a procedural obligation. That framing is more reliably answered than a general complaint about unfairness.

For the specific mechanics of contesting a delisting, the resource on appealing an EU delisting provides a parallel framework that applies to listing-specific removals alongside the account-level analysis in this checklist.

Phase 4: Assess the escalation options

If the internal route does not resolve the matter, sellers on Amazon ES have several external escalation paths – and the choice between them depends on what the platform failed to do and what outcome you are actually trying to achieve.

This is the decision point where the myth that EU sellers have no leverage is most directly wrong. The DSA, P2B, and DMA each create external enforcement routes that sellers can use, either directly or through complaint to a competent national authority. The routes are not fast, but they are real, and the threat of a regulatory complaint often prompts a platform response that the internal process did not.

• Out-of-court dispute settlement under P2B: Amazon is required to designate certified mediators for P2B disputes. This route is binding on Amazon to participate in, though not necessarily binding on the outcome. It is typically faster and cheaper than litigation and should be the first external step for most disputes.
• National regulator complaint: In Germany, the Bundeskartellamt has asserted supervisory jurisdiction over Amazon's conduct toward business users under both competition law and, increasingly, DMA-adjacent national provisions. In Spain, the CNMC (Comisión Nacional de Mercados y la Competencia) has parallel jurisdiction. A regulatory complaint does not produce a direct remedy to your account, but it contributes to the enforcement record and, in our practice, has been used to create platform-side pressure to resolve individual seller disputes.
• DSA Digital Services Coordinator: In Spain, the Digital Services Coordinator designated under the DSA provides an escalation route for content moderation decisions, including listing removals. Sellers can file a complaint if they believe Amazon has failed its DSA obligations as a VLOP.
• Judicial route: A direct court claim for breach of P2B obligations is available in EU member states but is typically the slowest and most expensive option. It is relevant where commercial damages are substantial and other routes have been exhausted.

The right escalation path is not the same for every seller. A seller with a suspended account needing quick reinstatement is in a different position from one seeking to challenge a category-wide terms change. We work with sellers to map the specific facts to the route most likely to produce the outcome they need, within the timeframe their business can absorb.

The contrast between EU and US enforcement mechanics – including how Bundeskartellamt-style proceedings differ from US federal action – is covered in the analysis of EU vs. US enforcement differences for sellers, which is worth reading before committing to an escalation path that involves cross-border elements.

Phase 5: Manage your account position while the process runs

Regulatory and internal complaint processes rarely resolve in days. Sellers need to manage their commercial exposure during the period the process runs.

This phase is about risk containment, not legal strategy. A seller who wins a P2B complaint six months after the suspension but has lost the business in the interim has not been helped by the victory. Parallel commercial steps matter.

• If FBA inventory is sitting in Amazon's fulfilment network on Amazon ES, consider whether to submit a removal order now to preserve stock, or to leave it in place if a quick resolution is expected. The risk of delay in either direction should be weighed against storage fees and the condition of the goods.
• Map your account-level reserve and any held balances. Reserve policies are subject to change under platform discretion; knowing the exact current figure, and checking it regularly, is necessary to track any further deterioration in your cash position.
• If the affected listings generate significant revenue on Amazon ES, consider whether any alternative sales channel – another EU marketplace surface or a direct-to-consumer route – can absorb part of the gap during the dispute period. This does not waive your rights against Amazon; it simply protects the business while the process runs.
• Keep internal stakeholders – finance, operations, any investor or lender – informed of the proceedings in general terms. A regulatory or commercial dispute of material scale may require disclosure in financing or contractual contexts; this is a matter to review with counsel.
• Do not make any changes to your Seller Central account, product listings, or supply-chain documentation without first considering whether those changes could affect the evidence record you have built in earlier phases.

In matters we handle involving Amazon ES specifically, the cash-flow pressure created by a held reserve or frozen disbursement cycle is often the most urgent short-term problem – separate from, but running in parallel with, the legal and regulatory resolution.

A mid-process decision: when to bring in specialist counsel

There is no rule that says every Bundeskartellamt-related seller issue requires a lawyer from day one. There is, however, a clear pattern in matters we see of sellers who reached out late.

An EU-based clothing accessories seller on Amazon ES (summer 2026) contacted us after spending several weeks handling an account-level restriction they attributed – correctly, as it turned out – to a platform-wide terms adjustment following regulatory pressure in Germany. By the time they came to us, they had already filed two generic appeals through Seller Support, neither of which cited P2B obligations. We rebuilt the complaint from Phase 1 documentation, filed a structured P2B internal complaint that named the specific procedural failures, and the account restriction was lifted. The lost time and the two unfocused appeals had not closed the legal route – but they had delayed the resolution by a significant margin and reduced the clarity of the paper record we had to work with.

The pattern recurs. The appeals that arrive at us in the best shape for a quick resolution are those where the seller documented thoroughly from Phase 1 and brought in specialist advice before filing the first formal complaint, not after it was rejected.

Does that mean you cannot act alone? Not necessarily. The checklist phases above can be executed without legal representation. But the decision points in Phase 4 – choosing the right escalation route, framing a regulatory complaint correctly, deciding whether mediation or a judicial claim is the better tool – are where legal advice produces the clearest return.

The steps above describe the standard path. Your situation turns on the exact wording of the notice you received, the scope of the platform change, your account history on Amazon ES, and the timing relative to any Bundeskartellamt investigation milestones – which is what we review first.

If you want a read on where your Amazon ES position sits relative to the P2B, DSA, and DMA options available to you, email info@tutamenlaw.com for an initial assessment.

What if you already filed and were rejected?

A rejected internal complaint or a non-response from Amazon's complaint-handling system is not the end of the road – it is the start of the external escalation record.

The myth that sellers have no leverage once a platform decision has been issued is most persistent after a first rejection. In practice, the rejection – and specifically what it did and did not say – often contains the clearest indication of which external route is most likely to succeed. A rejection that fails to address the P2B procedural failures is itself a further non-compliance. A template rejection that does not engage with the substance of a DSA-based complaint strengthens the case for a Digital Services Coordinator complaint in Spain.

• Save the rejection in full, in a durable format, with the date. If it is a template, note that explicitly in your record.
• Identify what the rejection did and did not address. A rejection that ignores a specific P2B argument is documented non-compliance by the platform.
• Consider whether the rejection timeline has expired any internal appeal windows – Amazon's own terms set timelines for internal escalation that sellers sometimes miss after a first rejection.
• Assess whether the matter is now ready for P2B out-of-court settlement, a national regulator complaint, or a Digital Services Coordinator filing, based on the analysis in Phase 4.

If a first appeal or filing already came back rejected, a second structured review can identify the specific reason it failed and what external paths remain open. We look at this regularly in matters that arrive at us mid-process.

To have a second read on a rejected complaint or to map your next step, reach out to the team at info@tutamenlaw.com.

Related areas

• EU Marketplace Regulation – the complete framework governing Amazon and other EU-surface sellers
• EU Delisting Appeals – the specific route to challenging listing-level removal decisions under EU rules

Frequently asked questions

How long does resolving bundeskartellamt proceedings and sellers usually take on Amazon ES?

There is no single timeline, and the honest answer is that it depends heavily on which route is used. An internal P2B complaint resolved at the platform level can move in a matter of weeks if the complaint is well-documented and targets a clear procedural failure. Escalation to a national regulator or Digital Services Coordinator typically operates on a longer horizon – months rather than weeks, and often longer if the investigation the regulator is running is broad. Out-of-court P2B mediation sits somewhere in between. In our practice, the sellers who resolve fastest are those who file a structured internal complaint first, with complete documentation, rather than those who bypass that phase in favor of immediate external escalation.

What are the main risks if I handle bundeskartellamt proceedings and sellers alone?

The largest risk is filing appeals or complaints that do not invoke the correct legal basis, which means they are addressed on Amazon's own terms rather than against the EU regulatory obligations that Amazon must meet. A second common risk is filing multiple generic responses that narrow the paper record available for later escalation – once you have filed two or three non-specific appeals, the external record is harder to construct cleanly. A third risk is missing the internal appeal windows that Amazon's own terms impose, which can close some routes before external options are fully open. None of these risks are irreversible at every stage, but they accumulate.

Do I need a lawyer for bundeskartellamt proceedings and sellers?

The checklist phases are designed to be actionable by a seller directly. Phase 1 through Phase 3 can be executed without a lawyer if you follow the documentation and complaint-filing steps carefully. The decision points in Phase 4 – choosing between P2B mediation, a national regulator complaint, a DSA Digital Services Coordinator filing, or a judicial claim – benefit from legal analysis, because the trade-offs between those routes depend on facts and timing that affect the outcome materially. Attorney-led handling is most valuable at the Phase 3 to Phase 4 transition, when the internal complaint has run its course and the external options need to be evaluated against your specific account position and commercial priorities.

About Tutamen

Tutamen is an independent law firm for online marketplace sellers. We represent Amazon, Walmart, Etsy and eBay sellers in account deactivations, frozen-funds recovery, intellectual-property disputes, arbitration and Notices of Dispute, and US federal Schedule A defense, plus EU marketplace regulation. Our work is attorney-led and confidential, with fees quoted up front. We act for founders, brand owners and in-house teams who need a specialist for a marketplace dispute. Our EU practice covers the DSA, DMA, P2B Regulation, and national-authority proceedings including Bundeskartellamt matters affecting sellers on Amazon ES and other EU surfaces. Engagements begin with a scoping review at a fixed fee so you know the cost before committing. To discuss your situation, email info@tutamenlaw.com.

Written by Priya Raman, IP & Brand Registry analyst, Tutamen. February 19, 2027.

Disclaimer: This article is general information, not legal advice, and does not create an attorney-client relationship. Marketplace policies and the law change, and every account and case is different. For advice on your situation, contact Tutamen at info@tutamenlaw.com.