Field security governs the user's ability to view information in specific fields. Like functions, every field in the application can be secured using SIDs that a user must have in their security profile in order to view or access that field. During application development, developers create SIDs for fields that require security. By default, there is no security set on a field - it is up to a developer to indicate that a specific field requires a SID. The SID is then added to the database. This SID must still be added to the security hierarchy by a system administrator who also ensures that the SID is added to the appropriate user profiles. Any changes made to a SID will only take effect when the changes are published.