Energy and infrastructure project document certification — why files get rejected, and how to fix it
This page lists 8 rejection causes we see in practice for energy and infrastructure project document certification, each with a fix that can be applied before filing. Most are caught during document review, well before the cost of re-certifying an entire set — to have our team review your scans first, contact LINE @THAIL or call 064-2894888.

Causes and fixes
1. Technical specifications must not be paraphrased in translation.
Fix: Confirm this requirement with the receiving authority before work starts and record the answer in the case file.
2. Permit references and concession numbers must match the source filing exactly.
Fix: Keep this as a checklist item on the front of the file and have a second reviewer sign it off before delivery.
3. Spell every name exactly as it appears in the passport, across every document in the same bundle.
Fix: Confirm this requirement with the receiving authority before work starts and record the answer in the case file.
4. Never remove staples or separate pages that an authority has bound and stamped across the seam.
Fix: Keep this as a checklist item on the front of the file and have a second reviewer sign it off before delivery.
5. Using a company affidavit issued long ago
Fix: Order a fresh affidavit before certification, since most destinations accept only recently issued extracts.
6. The signatory is not an authorised director on the register
Fix: Check signing authority against the affidavit and prepare a board resolution or power of attorney when someone else signs.
7. Company name or job title translated differently from the registration
Fix: Use the registered name and title verbatim in every document rather than translating the meaning.
8. Amending documents after certification
Fix: Finalise all wording before the certification step; later edits require the whole set to be certified again.

A review before filing costs less than re-certifying
Most rejections are not about the content of the document — they come from steps taken in the wrong order, or a format the receiving authority does not accept. Send us the scans before work starts and we will confirm the correct certification route and the full document list first.
Contact: LINE @THAIL · phone 064-2894888 · email Contact@thailaw-accounting.co.th
Talk to us before you commit to anything
Many clients arrive with one set of documents while the destination expects a different one. We start by asking where you are filing, for what purpose, and by when — then tell you plainly what is required, including the steps you can complete yourself at no extra cost. A team with in cross-border documentation is available before you spend time on the wrong route.
- Destination requirements explained in plain language.
- A clear statement of which steps your case needs and which it does not.
- Help sequencing multiple documents across multiple authorities.
Consult us at LINE @THAIL · 064-2894888 · contact@thailaw-accounting.co.th
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