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

Description that is used to select the value in the entity or field, such as Passport or Reference.

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.