The default version of provisiond-configuration.xml contains the following requisition-def:

<requisition-def import-name="localhost" import-url-resource="dns://localhost/localhost">
<cron-schedule>0 0 0 * * ? *</cron-schedule> <!-- daily, at midnight -->
</requisition-def>

Since virtually nobody has a nameserver on his OpenNMS server that allows zone transfers for the "locahost" zone, the presence of this definition results in a silly exception every day at midnight. It should be removed assuming it's safe to do so.