One key step in the quality assurance process is to ensure that the HL7 database has been filled out methodically for every site.

The quality assurance effort required on a site-by-site basis should be far less if the groundwork has been done by Ensuring Quality of the Core Infrastructure. If that is done well then most of the validation required for each site should be possible to do just using Chameleon and the command line msgtransform and msgdiff tools.

This is because all the site specific customization for each site should only occur within the VMD file for that site; meaning, only the way that mappings and python scripting is done changes from site to site.