I am using the free version and custom functionality.

Have two event logs and trying to create two flows with transition using the process explorer.

Data model, KM, Data Explorer everything is working.  In the KM link between logs is enabled. 

In Views - Process explorer , it shows two flows. but the transition is not showing so trying to enable the configure transition in the Transition toggle and getting the error as Invalid PQL query. TRANSIT_COLUMN: No join path between the case tables

1.What should be data structure.?

2.Do we need same event in both logs?

3.How does multievent log works with Transition enabled in backend.