Detail:

i am trying to update the user email using Autolaunched Flow with the help of process builder i am calling flow from process builder and passing values to the flow variable.

The user who is performing the above operation is not having sys admin or modify all permission.

As i know process builder runs in a system mode so the flow also should run in system mode.

[![Please look into the below error][1]][1] [1]: https://i.sstatic.net/yUV71.png