This is an old post but it is the only reference to this error I have found and has had several hundred views.
So here is what I finaly found after experencing this same issue:
It seems to be an error caused by a line that is not supported by the ILO firmware version.
I elminated sections of my xml file until the error stopped, then added the offending section in a few lines at a time.
In my case it was a call to
<SHARED_NETWORK_PORT VALUE="N" />
<VLAN ENABLED="N" />
<VLAN_ID VALUE="0" />
which were unsupported by this particular server ilo firmware level.
Leaving those lines out resolved my issues.