There is no single universal CBAM checklist. The evidence required depends on the actor, goods, installation, calculation method, reporting period, production route, precursors, carbon-price reductions, verification status and complexity of the file.
Regulatory content last reviewed14 September 2026
Regulatory data may come from suppliers, manufacturers, installations, commercial intermediaries, ERP systems, monitoring systems, declarations, certificates and external source records. The review asks where the information came from, who produced it, what it refers to, which period and version apply, and whether the records agree with one another.
The practical risk is not limited to the emissions calculation. The file must connect the imported goods to the documents supporting quantity, origin, supplier, producer, installation, emissions and other relevant information.
Your EU customers may rely on emissions and installation information supplied by you. The question is whether the documents behind those values clearly show where the figures came from and what they apply to.
The seller, exporter, producer and installation operator may all be different entities. Weetra checks whether the file keeps those roles connected instead of treating them as interchangeable.
Weetra can examine the documentary basis of a CBAM file within an engagement led by a legal adviser, customs professional or other trusted intermediary.
A document can be genuine and still fail to prove the point it is being used for. The review therefore tests the links between product and supplier, supplier and producer, producer and installation, reported value and source record, and the current file and earlier versions.
Imported goods → supplier → producer → manufacturing installation → reporting period → quantities → embedded-emissions information → source evidence.
Regulatory files are often revisited long after the original work is finished. Preserving what was received, what changed, what was corrected and what was relied on makes later internal review, professional advice, verification or authority scrutiny much easier.
A missing monitoring-plan version may arrive later, a quantity reconciliation may replace an earlier spreadsheet, or a supplier may correct an installation reference. The question is not only what the final file contains, but what changed, which version replaced which, and whether the corrected position still traces back to the source records.
Weetra examines the documents in scope, the information they contain, the links between the relevant actors and goods, the consistency of quantities and periods, competing versions, inconsistencies, corrections and the points the available records still cannot establish.
A review can produce findings, targeted questions, a Weetra Determination and, when included in the mandate, a Determination Package preserving the review history. The exact output depends on the mandate and review depth.
The legal information on this page is drawn from official regulatory sources. Weetra explains what those rules mean for the documents and records a business may need; this is not legal advice.
| Point being checked | Evidence that may be relevant | What one document does not prove by itself |
|---|---|---|
| Producing installation | Operator/installation records, production records, monitoring documentation, supplier evidence and identifiers that connect the goods to the facility. | An invoice naming the seller does not by itself identify the producing installation. |
| Quantity population | Customs records, invoices, shipment records, production/allocation records and reconciliation workbooks. | A single commercial quantity does not establish the population used in the emissions calculation. |
| Embedded emissions | Monitoring basis, source data, calculations, production quantities, precursor information and accredited verification material where applicable. | A final tCO₂e/t figure does not show which source records, period or calculation trail sit behind it. |
| Carbon price paid | Applicable legal mechanism, liable entity, payment records, rebates/compensation evidence, independent certification and attribution to the declared embedded emissions where required. | Membership in an ETS or a nominal carbon-price rate does not prove an Article 9 reduction by itself. |
