By 35 ABY, the First Order annexed the Unknown Regions world Didyma V and took control of its lommite production. After the annexation, the Didynon miner Engi Golba escaped from his homeworld and joined the Resistance.
The annexation was mentioned in Star Wars: The Rise of Skywalker: The Visual Dictionary, which was released in 2019 and authored by Pablo Hidalgo.