Added UoM 9122 and Coordinate System 6422-23. For geog2D CRSs changed CS from 6402 (DMSH) to 6422 (any representation) and amended scope and remarks. For geog3D CRSs changed CS from 6401 (DMSH) to 6423 (any representation) and amended scope and remarks. CS 6404 horizontal Axis UoM changed from 9102 (degree) to 9122 (degree (supplier-defined representation)).