#ESA:
"After the successful delivery of CSO-3, Ariane 6 demonstrated the full potential of its upper stage. The Auxiliary Propulsion Unit ignited as expected, and the Vinci engine’s third boost put the upper stage into a reentry orbit to safely burn up through Earth’s atmosphere, preventing accumulation of space debris. This confirms the full capability of Ariane 6."
https://www.esa.int/Enabling_Support/Space_Transportation/Ariane_6_takes_flight_for_the_second_time