Validation and Verification Bodies (VVBs) in Southeast Asia

Updated 2026-11-02 · 4 min read · By the akar.earth specialist team

VVB carbon verification explained: what validation and verification bodies do, how they are approved, how to choose one in Southeast Asia, and what they check.

A validation and verification body (VVB) is an independent auditor that checks a carbon project for a standard. At validation it confirms the project design meets the methodology and programme rules; at verification it confirms the reported emission reductions or removals are real, measured correctly and supported by evidence.

No credit is issued without a VVB opinion. For project developers in Indonesia and Southeast Asia, choosing the right VVB and preparing for its audit is one of the biggest drivers of timeline and cost.

How VVBs are approved

Each standard runs its own approval system:

• Verra approves VVBs that hold accreditation for greenhouse gas validation and verification, usually under ISO 14065, from an accreditation body recognised by Verra. VVBs sign an agreement with Verra and are approved for specific sectoral scopes, such as AFOLU.
• Gold Standard keeps its own list of approved VVBs, often overlapping with Verra’s.
• Plan Vivo sets Validation and Verification Body and Independent Expert approval requirements. See Plan Vivo.
• ART TREES requires approved VVBs, and VVBs must hold an ART Registry profile.

Audits follow ISO 14064-3 principles for verification and validation. Read ISO 14064-3.

Always check the standard’s current list. Approvals change, and a VVB approved for energy may not be approved for AFOLU.

What a VVB does step by step

1. Contract and conflict check. The VVB confirms independence from the project.
2. Desk review. It reviews the project description or monitoring report, data, models and evidence.
3. Site visit. Auditors visit the project, inspect plots, interview staff and communities, and check boundaries.
4. Findings. It raises corrective action requests for non-conformities, clarification requests for unclear points and forward action requests for later periods.
5. Response rounds. The proponent answers findings with revised documents and evidence.
6. Technical review. A reviewer inside the VVB checks the audit team’s work.
7. Report and opinion. The VVB issues a validation or verification report and statement.

Choosing a VVB in Southeast Asia

Several approved VVBs have staff or partners in the region, including in Indonesia, India, Thailand and the Philippines. Consider:

• Sectoral scope. Confirm approval for your project type and methodology.
• Methodology experience. Ask how many projects they have audited under the methodology and version you use.
• Local auditors and language. Auditors who speak Bahasa Indonesia and know local land rules save time in interviews and document review.
• Capacity and timing. Demand for AFOLU audits can be high. Book early.
• Rotation rules. Standards limit how long one VVB can verify the same project. Plan ahead.

The domestic system in Indonesia

Indonesia’s domestic scheme has its own validation and verification requirement. Bodies accredited by the national accreditation committee (KAN) for greenhouse gas validation and verification audit domestic emission reduction certificates. Read SPE-GRK. A project seeking both an international standard and domestic recognition may need audits under both systems. Coordinate scopes to avoid duplicated site work.

What VVBs flag most often

• Missing or inconsistent raw data behind reported numbers.
• Plots that cannot be relocated in the field.
• Allometric equations or parameters not matching the methodology.
• Weak evidence for land eligibility and tenure.
• Stakeholder consultation without records.
• Monitoring report figures that do not reconcile with spreadsheets.

Read monitoring reports and project design documents for what auditors test in each document.

Budgeting for audits

VVB costs depend on project size, complexity, number of sites and travel. Remote Indonesian sites add flights, boats and field days. Ask for quotes from more than one approved VVB, compare the audit days proposed, and check whether the site visit covers enough plots and villages. A lower quote with too few field days can lead to more findings and a longer audit.

Ask each VVB for its typical turnaround from site visit to draft findings, and from final responses to report. Build these into your issuance timeline and offtake delivery dates.

Validation vs verification

Validation happens once, before registration, and asks whether the design meets the rules. Verification happens after each monitoring period and asks whether the results are real and correctly calculated. The same project will face many verifications over its life, so the quality of its data systems matters more over time than the quality of its first design document.

Preparing for the audit

A clean data trail is the best preparation. Every number in the report should link to raw field records, GPS data, photos and calculation files. Our validation and verification support runs pre-audit reviews and manages finding responses. Our akar dMRV keeps plot data, photos and coordinates linked for auditors. See the registration process and the standards hub.