We performed engagement assurance using AccountAbility’s AA2008 (AA1000AS) with 2018 Addendum and DNV GL’s assurance methodology VeriSustainTM1 (Version 5.0), which is based on our professional experience, international assurance best practices including International Standard on Assurance Engagements 3000 (ISAE 3000) Revised2 and the Global Reporting Initiative (GRI) reporting principles on Content and Quality.