ConditionIsNotPresent - sorengranfeldt/mre GitHub Wiki
Condition xsi:type=ConditionIsNotPresent
This condition can be used to check whether a metaverse attribute is not present. The name of the metaverse attribute to check is specified in the MVAttributeName tag (see below).
If the metaverse attribute is not present, the condition is met.
<ConditionBase xsi:type="ConditionIsNotPresent">
<MVAttribute>adAccountName</MVAttribute>
</ConditionBase>