YTMND:API:Error and Response Codes
too lazy to format, changes soon.
1100 => 'Unknown return format requested (available formats are xml,phps,json,js).',
1101 => 'Requested JS format but required callback function was not specified.', // 1200-1499 User Interface Specific Errors 1200 => 'No user was given to perform a lookup on.', 1201 => 'User Id specified but was 0. ', 1202 => 'User Name array was specified but empty.', 1205 => 'Requested an exclusive request type for multiple users.', 1206 => 'Invalid user interface request type.'