"Delhi CM wasn't invited for Metro Magenta Line inauguration. If you are angry (then) donate," a post on party's Facebook page read.
Deputy Chief Minister Manish Sisodia had dubbed it as an "insult" to the people of Delhi.
The party often invokes emotions to appeal to its supporters to donate for the organisation.
The Metro's 12.38-km stretch of the Magenta Line, connecting Botanical Garden in Noida in Uttar Pradesh with Kalkaji Mandir in south Delhi, was inaugurated by Prime Minister Narendra Modi in the presence of Uttar Pradesh Chief Minister Yogi Adityanath on December 25.