The IPTC catalog contains references to IPTC-managed and externally-managed controlled vocabularies that are used throughout the IPTC's family of standards.
The official versions of these catalogs are at http://www.iptc.org/std/catalog/
The specifications of NewsML-G2 requires to define a Catalog of controlled vocabularies used with this item.
A Catalog provides a mapping of the Scheme-URI -- the globally unique and unambiguous identifier for a controlled vocabulary taking the format of a UR -- to an alias-string to be used with the QCodes in NewsML-G2 items.
To improve interoperability IPTC has defined a set of controlled vocabularies --
branded as NewsCodes -- for use with NewsML-G2 by anybody using a corresponding
Catalog file. This file also includes non-IPTC vocabularies, given URIs starting
with http://cvx.iptc.org.
The current version is 38, published in May 2023.
The file is available from the URL: http://www.iptc.org/std/catalog/catalog.IPTC-G2-Standards_38.xml
This catalog complements the NewsML-G2 catalog by vocabularies for IPTC's sports data format SportsML-G2.
The current version is 1, as of May 2016.
The file is available from the URL: http://www.iptc.org/std/catalog/catalog.IPTC-Sports_1.xml