Please see notification from Standards Australia in regards to publishing the updated Standard Part 1 for AS5488.
Classification of subsurface utility information, Part 1: Subsurface utility information
Product designation: AS 5488.1:2019
Abstract: This Standard provides a framework for the classification of subsurface utility location and attributes information in terms of specified quality levels for the management of subsurface utilities.
History: First published as AS 5488—2013. Revised and redesignated in part as AS 5488.1:2019.
Please find attached link for reference: