# 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.
