Description: National firm for conducting the study on compliance to CORSIA for Viet Nam aviation sector.Duration: From June to August 2025Overall objective: The objective of this assignment is to assess the compliance of the Viet Nam aviation sector with CORSIA; conduct a deep-dive analysis on CORSIA compliance using carbon offsets; assess the potential of domestic carbon credits and mitigation outcomes can be used for CORSIA offsets; provide policy and legal recommendations to the Vietnamese government and develop the roadmap for airline corporations regarding the use of carbon offsets for CORSIA compliance.Please indicate whether you intend to submit a bid by creating a draft response without submitting directly in the system. This will enable the system to send notifications in case of amendments of the tender requirements. Should you require further clarifications, kindly communicate using the messaging functionality in the system. Offers must be submitted directly in the system following this link: http://supplier.quantum.partneragencies.org  using the profile you may have in the portal. In case you have never registered before, you can register a profile using the registration link shared via the procurement notice and following the instructions in guides available in UNDP website: https://www.undp.org/procurement/business/resources-for-bidders.  Do not create a new profile if you already have one. Use the forgotten password feature in case you do not remember the password or the username from previous registration.Search for the specific tender using search filters and subscribe to the tender in order to get notifications in case of amendments of the tender document. If you need support with the online system, you can contact the contact details of this tender as indicated in the solicitation document.UNDP Vietnam PROCUREMENT UNIT