# 4.1 Validation and Verification Body Requirements All VVBs must be approved by NCS based on alignment with conflict of interest policies, rotation of VVB policies, oversight on quality, and the following requirements: * All projects on the NCS registry must be audited as set out in ISO 14064-2:2019. This means that a VVB must be accredited to carry out validation and verification as set out in ISO 14064-3:2010. * VVBs must be able to demonstrate accreditation from: * An International Accreditation Forum (IAF) member against ISO 14065 or * a relevant governmental or intergovernmental regulatory body. --- # Agent Instructions: Querying This Documentation If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question. Perform an HTTP GET request on the current page URL with the `ask` query parameter: ``` GET https://standard.nature-value.org/readme/4-validation-verification-requirements/4.1-validation-and-verification-body-requirements.md?ask= ``` The question should be specific, self-contained, and written in natural language. The response will contain a direct answer to the question and relevant excerpts and sources from the documentation. Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.