This protocol MUST indicate to the RPC runtime that it is to support the Network Data Representation (NDR) 20 (that is, NDR20) transfer syntax only, as specified in [C706] part 4.

This protocol MUST enable the ms_union extension, as specified in [MS-RPCE] section 2.2.4.

In addition to RPC base types and definitions specified in [C706] and [MS-DTYP], additional data types are defined below.