#define ERR_USERONCHANNEL_MSG "443 %s %s %s :is already on channel"
#define ERR_SUMMONDISABLED_MSG "445 %s :SUMMON has been disabled"
#define ERR_USERSDISABLED_MSG "446 %s :USERS has been disabled"
+#define ERR_NONICKCHANGE_MSG "447 %s :Cannot change nickname while on %s(+N)"
#define ERR_NOTREGISTERED_MSG "451 %s :Connection not registered"
#define ERR_NOTREGISTEREDSERVER_MSG "451 %s :Connection not registered as server link"
#define ERR_NEEDMOREPARAMS_MSG "461 %s %s :Syntax error"