Jiankang (498) — the same event in Book of Southern Qi and History of the Southern Dynasties

Book of Southern Qi: Emperor Ming dies (aged 47), entrusting the succession by testament to Xu Xiaosi and others; History of the Southern Dynasties…

What each source says

Emperor Ming dies (aged 47), entrusting the succession by testament to Xu Xiaosi and others

年四十七。遺詔曰
Location: 南齊書卷6 永泰1年

Emperor Ming died at the Zhengfu Hall at age 47.

己酉，帝崩於正福殿，年四十七
Location: 南史卷5 永泰1年