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This document defines a set of metadata to support the audit trail of the transformation of a geometry definition, while it is distributed and shared in supply-chains, to ensure the traceability of geometric model data. It also defines a set of web services based on the utilisation of these metadata.

The following are within the scope of this document:

.     metadata definitions for geometry transformation audit trail:

.     syntax for storing these metadata in geometry data sets in various formats;

.     conformance level for implementers and business processes;

.     definitions of web services to query the geometric model data set and its associated metadata.

The following are outside the scope of this document:

.     service specifications for CAD operations;

.     specifications of a cybersecurity infrastructure to enable web services;

.     the technical implementation of a STEP geometry services client or server;

.     any geometric model definition;

.     any product and manufacturing information (PMI) definition;

.     archiving.