Cannot delete PUBLIC option '%1' since user settings exist

Item Value
SQLCODE -896
Constant SQLE_UNSET_PUBLIC_ID
SQLSTATE 42W82
Sybase error code 13587
ODBC 2 State 37000
ODBC 3 State 42000
Parameter 1 Name of the option.

Probable cause 

You tried to delete a PUBLIC option, but there are user settings for the same option. The user settings must be deleted before the PUBLIC option is deleted.