![image](https://images.prismic.io/goldstandard/OTBkNDMyMzItYjZiZS00OTViLTgxNTctYjE2ZjRlMzM1NzA4_external-acr-double_counting_carbon.jpg?auto=compress,format&rect=0,0,3000,2100&w=1536&h=2100&q=90)
Guidelines on Avoiding Double Counting for CORSIA were published in June 2019. These guidelines were prepared by a working group that included Gold Standard and other voluntary market standards, and includes valuable guidance on the process of obtaining a Letter of Authorization and Assurance (LoAA) in preparation for securing Corresponding Adjustments to ensure environmental integrity as well as other relevant requirements.