I am trying to filter a "Create related record" button to only show when a record has not already been created. I am trying to use the "Filter Criteria" on the action button and am using this FetchXML:
<fetch>
<entity name="parent-entity">
<filter type="and">
<condition attribute="parent-type" operator="eq" value="220970000" />
<link-entity name="child-entity" from="parent-lookup" to="parent-id" link-type="not any" />
</filter>
</entity>
</fetch>
The FetchXML works correctly in Fetch builder (it only returns the record parent GUID if no children records exist) but is not working when put in the "Filter Criteria" for the action button. Is this a limitation of the Filter Criteria not operating on link-entities?