2.2.3 Named Property Mapping Storage

Named properties are specified using their property names.

The mapping between a named property's property name and its property ID and vice versa is provided by the data inside the various streams contained in the named property mapping storage. The streams and the role each one plays are specified in the following subsections.

This storage is the one and only place where such mappings are stored for the Message object and all its subobjects. The storage MUST be named "__nameid_version1.0".