2.2.2.21.2.1 OldVersionComponentAccessAllowedACE
The OldVersionComponentAccessAllowedACE type represents an ACCESS_ALLOWED_ACE as specified in [MS-DTYP] section 2.4.4.2, where the access mask is an OldVersionComponentAccessMask (section 2.2.2.21.1.2).
A field of this type MUST be an ACCESS_ALLOWED_ACE ([MS-DTYP] section 2.4.4.2). Furthermore, the Mask field MUST be an OldVersionComponentAccessMask. The AceFlags subfield of the Header field is not meaningful and SHOULD be zero.