In order to distinguish it from "Muryoju-kyo sutra" (Sutra of Immeasurable Life) whose title is same in Sanskrit, it's also called "Smaller Sukharvativyuha Sutra."
サンスクリットでは同タイトルの『無量寿経』と区別して『小スカーバティービューハ』とも呼ぶ。