D365FO – AX – Get Prospect type in X++

//Get Propect type
DirPartyTable dirPartyTable = DirPartyTable::findRec(smmBusRelTable::find(...put your prospect here...).Party);
//Continue if Prospect type is "Organization"
if(dirPartyTable.type() == DirPartyType::Organization)
{
....do something...
}