The circular revise the norms for appointment of an independent third- party reviewer or certifier for green debt securities. The changes align the requirements for green debt securities with the framework prescribed for other ESG debt securities such as social bonds, sustainability bonds, and sustainability- linked bonds. Issuers must appoint an independent reviewer to certify that the issuance complies with SEBI Regulations. The reviewer must be independent, conflict-free in remuneration, & possess ESG expertise.