Today, we uploaded a new version of the BDMP's custom TEI schema to the website (both in ODD and compact RelaxNG formats). The new schemata carry the version number 9.0. The changes are minor, and XML files that were validated against v8.0 should validate correctly agains v9.0 as well. The vocabulary has been expanded a little to pave the way for new BDMP modules, and takes TEI P5 v3.0.0 as its basis. The new version also makes it possible to use XInclude in the XML.
These schemata can be used by BDMP contributors to validate their XML, or by anyone else who is interested. For more information (and the link to download the schema), please refer to our Validation page. Note, however, that the best and easiest way to learn which tags we use when, and why is of course still the Encoding Manual (and our The Tags section in particular).