ERR_NOPRIVILEGES (481) numeric is sent to users who try to do an oper-only action, but fail because they aren’t an IRC operator.
:server 481 <nick> :Permission denied - You are not an IRC operator
<nick>: Nickname of the user.
The final parameter’s text is human-readable and may vary, but the message is typically something like the above.
C: KILL george :Your behavior is not conducive to the desired environment. S: :irc.example.com 481 dan :Permission denied- You're not an IRC operator
An example of an oper-only action being rejected.
You can edit and contribute changes to this page on GitHub here.
Latest change: 30 November 2018.