It's the second large transaction between Airbus and IndiGo, which announced an order for A320neos from the planemaker in August 2015.

Source: https://www.postandcourier.com/business/airbus-wins-mammoth-order-for-500-jets-from-indias-indigo-at-paris-air-show/article_d3f53572-0ebd-11ee-95e5-1b44368025d0.html

PARIS (Reuters) - European planemaker Airbus is negotiating a new round of plane orders with China, coinciding with a visit by French President Emmanuel Macron to the economic superpower later this week, government and industry sources said.

Source: https://www.marketscreener.com/quote/stock/AIRBUS-SE-4637/news/Airbus-in-talks-for-new-China-jet-order-ahead-of-Macron-visit-43414380/?utm_medium=RSS&utm_content=20230403

The deal, split equally between France’s Airbus and rival planemaker Boeing, was first reported by Reuters in December and could finally be announced as early as next week, the sources said.

Source: https://www.thehindu.com/business/air-india-seals-record-order-for-about-500-jets-from-airbus-boeing/article66498097.ece