Before a natural rubber lot reaches a buyer, the custody file should make origin, supplier, volume, processing and evidence gaps readable.
Matheus Peguim
Before a buyer can review a natural rubber lot for EUDR-related due diligence, the most useful upstream work is often not a long report. It is a clean handover file that lets the buyer see how the physical lot, supplier records, origin evidence and shipment documents connect.
That file does not replace the buyer's legal review or the formal due diligence statement process in the EU system. Its role is narrower and operational: reduce ambiguity before the lot leaves the mill, cooperative or exporter.
EUDR review depends on records that can be followed. The EU regulation points to information such as product description, quantity, country of production, plot geolocation, supplier and customer details, and verifiable information linked to deforestation-free requirements.
For natural rubber supply chains, those elements rarely live in one place by default. Supplier registration may sit in one system. Weighing tickets may sit at intake. Lot formation may be controlled by production. Shipment paperwork may be prepared by logistics. Buyer compliance teams then receive fragments and have to reconstruct the chain.
A custody handover file closes that gap. It gives the buyer one operational view of the lot before the formal review starts.
A useful file starts with the lot identity. The buyer should be able to identify the internal lot code, product type, shipment reference, volume, date range, processing unit and destination buyer without asking for a second spreadsheet.
The second layer is supplier evidence. At minimum, the file should connect the lot to the suppliers, farms or collection sources that contributed material. If material came through a cooperative or aggregator, the file should make that route visible instead of hiding it behind a single commercial supplier name.
The third layer is origin evidence. This is where geolocation records, farm identifiers, production period, collection dates and any supporting documents should be linked to the material that entered the lot. The point is not to create a decorative map; it is to preserve a readable bridge between origin data and the physical lot.
The fourth layer is custody movement. Intake, weighing, reception slips, internal transfers, processing batches, storage location and shipment release should follow the same lot logic. If the lot was split, merged, reclassified or corrected, that exception should be visible.
The fifth layer is buyer-facing context. If a due diligence statement reference number already exists for relevant upstream material, record it clearly. If it does not exist yet, do not invent one. State what is available, what still depends on the buyer's process, and what supporting evidence has been handed over.
The most common weakness is a clean final shipment file that hides messy intake data. A buyer may see the invoice, product description and volume, but not the supplier path behind the volume.
Another weakness is treating a DDS reference number as if it were the whole custody file. A reference number can help administrative continuity, but it does not by itself explain which suppliers, plots, dates, volumes and processing steps support the lot.
A third weakness is exception handling. If a supplier record is incomplete, a geolocation file changed, a ticket was corrected, or two lots were mixed, the handover file should not bury that fact. It should show the exception, the decision taken, the person or function responsible, and the evidence used to approve or block the material.
For each shipment, keep one index page or cover sheet. It should list the lot code, shipment reference, product description, total volume, supplier count, production or intake window, destination buyer and file owner.
Then organize evidence in four folders or sections:
Each section should have a simple reconciliation check. The volume received should connect to the volume processed. The processed volume should connect to the stored lot. The stored lot should connect to the shipment. Any gap should be explained before the buyer receives the file.
This is not bureaucracy for its own sake. It is a way to make the chain of custody readable under pressure.
Peguim should be understood as infrastructure for organizing evidence, supplier data, lot history and operational traceability. It can help teams make the custody file easier to review, update and audit.
It should not be presented as a legal guarantee, a certification body or a substitute for the due diligence obligations of operators and traders. The stronger position is more practical: when records are structured before dispatch, buyers have fewer blind spots and mills have a clearer basis for answering follow-up questions.
European Commission - Regulation on Deforestation-free products: https://environment.ec.europa.eu/topics/forests/deforestation/regulation-deforestation-free-products_en
European Commission - Implementing the EU Deforestation Regulation: https://green-forum.ec.europa.eu/deforestation-regulation-implementation_en
EUR-Lex - Regulation (EU) 2023/1115: https://eur-lex.europa.eu/eli/reg/2023/1115/oj
European Commission - EUDR Information System launch: https://environment.ec.europa.eu/news/eu-deforestation-regulation-information-system-launches-2024-12-06_en
Photo: Quang Nguyen Vinh / Pexels.
Keep reading
