SPD-400: Reporting & Disclosure Rules is the core communication and disclosure document of the Sustainable Product Declaration system developed by United Metric Association. It defines how SPD results, supporting evidence, assessment boundaries, verification status, limitations and public-facing sustainability information should be reported and communicated. Within the SPD system, SPD-400 provides the rules for report structure, disclosure requirements, communication wording, claim restrictions, public summaries, certificate language, registry information and responsible use of SPD outputs. 

The purpose of SPD-400 is to ensure that product sustainability information is presented in a clear, consistent, transparent and non-misleading manner. It translates the technical assessment and verification results of SPD into structured reports, public summaries, certificates, registry pages, QR-linked information and approved communication materials.

SPD-400 plays a central role in protecting the credibility of the SPD system. Sustainability communication can easily become vague, exaggerated or misleading if assessment results are presented without clear boundaries, assumptions, limitations and evidence references. SPD-400 therefore defines how information must be disclosed so that users understand what has been assessed, what evidence supports the declaration, which lifecycle boundary applies, what data limitations exist and what claims are not supported.

A key function of SPD-400 is claim control. The document distinguishes between acceptable wording, restricted wording and prohibited claims. It prevents SPD outputs from being used to imply that a product is automatically “green,” “fully sustainable,” “eco-friendly,” “carbon neutral,” “net zero,” “zero impact,” “environmentally superior,” or accepted by all procurement or green building systems unless such claims are separately assessed, verified and approved under applicable rules.

SPD-400 also supports the anti-greenwashing principles of the SPD framework by requiring communication to remain specific, evidence-based, scope-limited, traceable and transparent. It ensures that SPD-based statements are linked to the approved declaration, verification scope, registry status and public disclosure rules rather than being used as general marketing language.

The guideline works closely with other SPD documents. SPD-200 defines the assessment methodology, SPD-300 defines verification and review, SPD-500 defines ESG indicator guidance, SPD-600 defines certificate and registry rules, and SPD-800 supports digital traceability. SPD-400 ensures that the outputs from these processes are communicated responsibly and consistently.

Overall, SPD-400 provides the communication integrity layer of the Sustainable Product Declaration system. Its value lies in turning technical sustainability information into clear, controlled and market-ready disclosure while preventing unsupported claims and protecting the credibility of SPD-based product communication.
The full SPD-400 Guideline is available for download exclusively by United Metric members.