1. The latest lesson is larger than whether a code exists
DITP's analysis published on 7 August 2026 says Vietnam is reviewing governance of growing-area codes, packing-facility codes and test certificates following allegations of improper use. This concerns Vietnam's system and should not be generalised to every country or operator.
Thailand's Office of Agricultural Affairs in Beijing reported on 2 July 2026 that checks on Vietnamese durian entering China were focusing on orchard and packhouse codes matching customs and phytosanitary documents. Code validity and the match between goods and records must therefore be tested together.
2. Registration, identity and lot evidence answer different questions
Registration establishes which entity or site appears in the referenced registry and its status when checked. Identity establishes whether the orchard, block, packhouse, supplier and accountable people in the process match the source records.
Lot evidence explains which physical goods were harvested, received, split, merged, graded, packed, sampled and exported. A registry entry cannot automatically prove that every durian in a container came from that source.
3. The six-layer Code Governance Evidence Pack
This is an editorial question framework, not an official form or new standard. Operations must use the latest documents and requirements of the competent authorities.
- Code Status — code, type, holder, scope, verification date, registry source and current status.
- Orchard Identity — location, block, cultivar, producer, relevant GAP evidence and confirmation that the physical source matches the code.
- Lot Formation — harvest date, supervisor, quantity, containers, unique lot code and segregation rules.
- Packhouse Flow — intake time and quantity, receiving checks, grading, loss, splits, merges and approvals.
- Sample & Document Linkage — sample ID, sampler, result, label, certificate and export records tied to the same lot.
- Change & Exception Control — orchard, packhouse, sample, container or document changes and the resulting Hold, Recheck, Reject or Release decision.
4. Transitions create the largest evidence gaps
Even correct source data can lose meaning when fruit from several origins is pooled, a lot is recoded, a sample is detached from the goods or a container changes after documents are prepared. Every split, merge, rework and relabel event should leave an auditable trail.
Define which mismatches stop a shipment, who may release it and which primary source must be rechecked. A correction log should retain the old value, new value, reason, time and approver rather than overwriting history.
5. Use official registries within their proper scope
Thai guidance published on 2 April 2026 separates orchard, packhouse, exporter and customs responsibilities and points users to the relevant registries and laboratory lists. The Department of Agriculture also maintains the official list of orchards and plant-production facilities registered for export to China.
Registry verification is a starting point, not lot-specific product certification. This article does not say that Siam Diamond holds or uses any code; it is not an export licence and cannot replace current verification with the Department of Agriculture, certification body, laboratory or destination authority.
