Check is reference is empty

Object A and Object B are connected in a 1 - 0 (A is parent) I want to check if object A and B have a reference. A is the input parameter in the flow. Is it possible to do it in 1 exclusive split ($ObjectA/Module1.ObjectA_ObjectB = empty) ? Or do I have to retrieve object B over the reference to A and check if the retrieved object is empty?
1 answers

Since object A is your input object of the microflow, you can use an exclusive split the way you described to check if a reference is present. If object B was the input object of the microflow you should retrieve object A first and then check if it is empty.