@kack l
it's explained in detail here
ServiceNow Learning 42: Functionality of "run as" in Flow Designer (Interesting to know)
Running Flows with Alternate Permissions
If my response helped please mark it correct and close the thread so that it benefits future readers.
Regards,
Ankur
✨ Certified Technical Architect || ✨ 10x ServiceNow MVP || ✨ ServiceNow Community Leader
