The names of the underlying database fields can be found through the Tools > Customization > Project Entities interface. That will show you the system defined and user defined fields in the UI, both the label in the UI and the database field name to which it is linked.
The prefix at the beginning of the name indicates what database table it comes from. You will need to look at the Database Reference documentation for more details on that.
The code you provided is not sufficient for us to debug your problem. Please provide the rest of the code that shows how you defined the "test" item.
The prefix at the beginning of the name indicates what database table it comes from. You will need to look at the Database Reference documentation for more details on that.
The code you provided is not sufficient for us to debug your problem. Please provide the rest of the code that shows how you defined the "test" item.
