In the current Star Wars canon, the Alderaanian Diplomatic Corps was mentioned in "The Rise of the Rebellion and the Battle of Yavin," a book published as part of the Star Wars Encyclopedia series by De Agostini on March 9, 2021. The corps originated in the Star Wars Legends continuity, where it was first mentioned on a card in the 1995 A New Hope Limited set of the Star Wars Customizable Card Game.
In the current Star Wars canon, the Alderaanian Diplomatic Corps was mentioned in "The Rise of the Rebellion and the Battle of Yavin," a book published as part of the Star Wars Encyclopedia series by De Agostini on March 9, 2021. The corps originated in the Star Wars Legends continuity, where it was first mentioned on a card in the 1995 A New Hope Limited set of the Star Wars Customizable Card Game.