Background
I have 3 custom objects:
Invoice__c
Invoice_Line__c
Appointment__c
Their relationships are:
Invoice__c
is a parent (master-detail) toInvoice_Line__c
Invoice_Line__c
has a lookup toAppointment__c
Question
Why can't I create a custom Report Type linking the 3 objects together?
i.e.
Appointment__c
> Invoice_Line__c
> Invoice__c
Or some other combination?