Unique value, such as 1, that must not exceed the maximum length of the corresponding field in an integrated system, such as a student management system.

After saving, the value cannot be edited.

Description that is used to select the unit of measurement, such as Years.

If selected, the entity or field can have the value. If cleared after the value has been selected for the entity or field, the entity or field keeps the value. However, the value is no longer available for selection.

Code that defines the unit of measurement for reporting purposes, such as 1.