When errata information for dnf/yum get updated the <updated date=""> field in the updateinfo.xml is modified:
<?xml version="1.0"?>
<update from="errata@redhat.com" status="stable" type="security" version="1">
  <issued date="2012-01-27 16:08:06"/>
  <updated date="2012-01-27 16:08:06"/>
    <collection short="">
      <package arch="noarch" name="walrus" release="1" src="http://www.fedoraproject.org" version="5.21">
No such field exists on suse's updateinfo.xml [0]

How does SUSE deal with updated erratum? Is a new errata published everytime an update is needed? Or does SUSE update the existing errata?

[0] https://raw.githubusercontent.com/op...updateinfo.rnc