How could I make a query for activities but filtering by regarding object. I mean there are activities regarding to lead, opportunitites, with odata or fetchXml
if I'd like to filter those regarthing to leads.
I've tried something like activitypointers?$select=activityid&$filter=_regardingobjectid_value@Microsoft.Dynamics.CRM.lookuplogicalname eq 'lead' but no works. Any help. thanks.