Initial lessons and recommendations for the ART-TREES validation and verification process

This web page distils practical lessons from recent jurisdictional experiences with ART-TREES validation and verification(V&V).

It supports government counterparts and technical teams, including program managers, Monitoring, Reporting and Verification (MRV) specialists, safeguards leads and authorized focal points, to organize V&V processes more efficiently, addressing findings, and strengthening readiness for future cycles.

The recommendations presented are not exhaustive. They are organized by theme to help plan and implement V&V processes.

Please also note that this is a work in progress. For any comments or questions, write to [email protected]

1. Documentation and internal consistency

Key lessons: Incomplete or inconsistent dossiers—especially misalignment between the TREES Registration Document (TRD) and the Trees Monitoring Report (TMR) -- trigger findings, rework, and delays. Central coordination and disciplined version control materially reduce VVB queries. As REDD+ programmes evolve over the years and stakeholders change, complete and consistent documentation of participation is essential evidence of full and effective engagement.

Recommendations

• Single source of truth. Establish and maintain a centralized evidence repository with strict change control and links to each section of the TRD, TMR, Safeguards Information System (SIS), and Summary of Information (SOI).
• Traceable claims. Cross-reference every material claim in TRD/ TMR to verifiable evidence (datasets, minutes, contracts, maps, etc) for the policies, laws and regulations (PLRs) assessment. Include relevant non-forestry PLRs when applicable.     
• Evidence of stakeholder engagement. Substantiate this through clear records of attendance (signed attendance sheets with name, telephone number, location, organization, gender, etc) that need to be scanned and attached to reports. Workshop reports or summaries without these records are insufficient.
• Template fidelity. Populate TRD strictly per official template (accounting area, eligibility, crediting level, monitoring plan, reversals/leakage, safeguards indicators) and keep parallel, consistent clean and track-changes versions for all submissions and resubmissions throughout the V&V. All changes made in the TRD must be reflected in the relevant sections of the TMR, particularly responses to findings.
• Capacity. Run periodic refresher trainings on TREES document consistency and evidence expectations.

2. Governance, roles, and communications

Key lessons: Diffuse communications with the VVB and uncontrolled document circulation create audit risks. A single mandated V&V Coordinator improves efficiency and clarity.

Recommendations

• V&V Coordinator. Formally designate an authorized V&V Coordinator (sole liaison/ signatory) and name MRV and Safeguards leads. Keep an auditable communications log with the VVB.
• Audit plan socialization. Share the VVB audit plan early across teams (steps, timelines, roles, and response pathways) before fieldwork begins.

3. Contracting and managing the VVB

Key lessons: Contract clarity (logistics, site-visit planning, languages/ interpretation, milestones, response windows) and appropriate VVB team composition (local language/ cultural competence, gender balance) materially affect outcomes.

Recommendations

Procurement of VVB

• Procure only from ART-approved (or provisionally approved) VVBs and sign conflicts-of-interest attestations prior to fieldwork.
• Specify milestones (kick-off, audit plan, on-site, closing), comment cycles, and an outer time limit [12-month] consistent with TREES timelines.
• Define interview language preferences and who pays for translation/interpretation; attach a glossary of key terms to ensure national context understanding (e.g., Free, Prior and Informed Consent -FPIC, Payment for Ecosystem Services -PES, benefit sharing).
• Request nationally relevant expertise in the V&V team, including familiarity with forestry/ legal terminology and community engagement, and target gender balanced teams.   

Management of VVB

• Pre kick-off workshop. Convene all relevant actors so the VVB can explain the approach, evidence needs, and site visit plan with the jurisdiction before V&V activities start.
• Contract changes. Discuss any extensions or scope changes with the host jurisdictions; do not rely solely on VVB internal procedures or agreement with the standard setting body.

4. Public transparency and stakeholder input

Key lessons: Proactive management of public notice and 30-day comment period can reduce late-stage contention; routing and tracking comments are critical for the success of the process.

Recommendations

• Engage key stakeholders before initiation to align expectations for the V&V stages and activities.
• Calendarize publication and 30-day comment windows; prepare concise, documented responses and ensure traceability through the VVB review.
• Keep a public log of comments and resolutions to bolster external confidence.

5. Audit planning, risk assessment, and sampling

Key lessons: Risk-based scoping (carbon data systems, safeguards processes, eligibility/rights, and third-party comments) yields targeted fieldwork and defensible sampling.

Recommendations

• Prepare a pre-audit “risk brief” (data lineage, Quality Assurance / Quality Control (QA/QC), uncertainty, rights/ eligibility basis, double-counting controls, SIS/SOI status) to guide VVB planning and evidence requests.
• Align internal schedules with TREES submission/verification cadence to avoid compressing critical steps near deadlines.

6. Field missions and stakeholder engagement

Key lessons: VVBs select sites based on risk. To ensure free expression, some interviews may require government representatives to step out. Culturally appropriate materials and interpreters improve outcomes.

Recommendations

• Co-plan site visits with the host jurisdiction, reflecting real travel times and logistics to avoid stakeholder fatigue or no-shows.
• Field teams should include a trusted community liaison and a government technical lead; pre-position maps, local practice descriptions, and a simple terminology brief. Local liaisons from each community, with knowledge of indigenous culture and languages, would help to improve the reliability of interviews and ensure free participation.
• Oversee budget and contract for interpretation – specially for Indigenous Peoples – and clarify responsibilities. Ensure VVBs hire qualified interpreters.

7. Carbon accounting: Data quality, uncertainty, reversals, and leakage

Key lessons: Findings often stem from gaps in activity data traceability, emission/removal factors, uncertainty methods, and application of reversals/leakage tools.

Recommendations

• Document quantitative uncertainty methods and data provenance, stratification, factors, and Standard Operational Procedure (SOP) consistent with TREES requirements and TRD fields.
• Provide transparent workbooks for reversals risk assessment/buffer and leakage deductions and ensure they reconcile to reported results.
• Walk-throughs. Schedule technical briefings with the VVB on key methodological choices (e.g., change detection, EF development, uncertainty propagation).
• When responding to findings, cite the specific SOP provisions applied.

8. Legal authority, program interactions, and double counting

Key lessons: VVBs assess rights descriptions and credible plans to obtain/ secure rights; they scrutinize overlaps with other programmes and double-counting controls.

Recommendations

• Map overlaps between multiscale REDD+ initiatives such as carbon projects and national/ jurisdictional REDD+ programs comprehensively.
• In the TRD, set out ownership/rights pathways, identify overlaps (programs/projects), and describe procedures to avoid double issuance/use/claims.
• In the TMR, demonstrate how those procedures to avoid double issuance/use/claiming were applied in the monitoring period.

9. Safeguards and SIS/SOI alignment

Key lessons: Safeguards are among the most sensitive verification areas; early cycles may show differing interpretations of stepwise/outcome requirements. VVBs may seek outcome evidence earlier than anticipated.

Recommendations

• At the start of the crediting period, report comprehensively on structure and process indicators, and present either early outcome evidence or a plan for conformance to achieve outcomes within the applicable timeframe under TREES.
• Plans for conformance for outcome indicators should specify current status, future activities and monitoring, including roles and responsibilities, and time-bound milestones.
• Align subnational reporting with national safeguards frameworks; if the SIS is the principal reporting tool, explicitly map SIS outputs to TREES safeguards indicators in the TRD/TMR and ensure consistency. Use TMRs to complement – not merely duplicate – SIS information.
• Provide live links and references to all available evidence to reduce the number of findings.

10. Continuous improvement and corrective actions

Key lessons: Multiple finding rounds are common in early cycles. Robust, time-bound corrective action plans (CAPs) are essential for minor non-conformances; major non-conformances must be closed prior to a positive opinion.

Recommendations

• Maintain a CAP register (root cause, action, owner, deadline, evidence) and map each finding to documentary updates and resubmissions.
• Version discipline. Always maintain both clean and tracked versions; register each submission to VVB/ART and archive correspondence to reduce ambiguity and speed reviews.
• Update prior deliverables when needed (e.g., add consultation detail, insert maps/figures, clarify methods) so submissions match VVB expectations.
• Engage the ART Secretariat early—within its role—to clarify interpretations (e.g., rights, removals, evidence expectations) without compromising VVB independence.