This amendment specifies version 2 of the mapping from XSD into ASN.1. The version 2 mapping reduces the bandwidth needed to transfer XML documents defined using XSD in the ASN.1 binary formats. There are two areas in which improvements have been made. The first is the use of the new ASN.1 time types, and the second is the use of ITU-T Rec. X.891 | ISO/IEC 24824-1 (Fast Infoset) binary encodings in place of the character encodings used in version 1 for xs:any.