For the API method user.update, when you pass in invalid data, for example attempting to update a user_id that doesn't exist, it returns very generic non-specific errors...

For example if I hit the Zabbix API with the following...

ZabbixAPI::user.update (
'userid'=>5, //Note this userid doesn't exist
'refresh'=>1000,
);

It returns...

Array (
[code] => -32500
[message] => Application error.
[data] => [ CUser::update ] Error in query [UPDATE users SET name='', surname='', alias='', passwd='', url='', autologin=, autologout=, lang='', theme='', refresh=1000, rows_per_page=, type= WHERE userid=5] [You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near ' autologout=, lang='', theme='', refresh=1000, rows_per_page=, type= WHERE' at line 1]
)

It would be ideal if message was at least something relevant, but keeping the [data] field verbose is good I think to help you guys clearly diagnose the problem.

Array (
[code] => -12345
[message] => Invalid userid, unable to update record
[data] => [ CUser::update ] Error in query [UPDATE users SET name='', surname='', alias='', passwd='', url='', autologin=, autologout=, lang='', theme='', refresh=1000, rows_per_page=, type= WHERE userid=5] [You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near ' autologout=, lang='', theme='', refresh=1000, rows_per_page=, type= WHERE' at line 1]
)

Cheers!