isrequired

[This is preliminary documentation and subject to change.]

Used when defining a property to indicate whether the property is required by a particular application.

Full Name

urn:schemas-microsoft-com:exch-data:isrequired

OLE DB Type

DBTYPE_BOOL

Remarks

If you specify a property as being required by your application, you must enforce the logic. The store does not force applications to set this property when creating or saving item properties.