Any way to tell which Bill a Journal Entry came from (SS2.0 and UI)?
I’ll need to do this in SS but am also curious in general how to tell which Bill generated a JE. Any thoughts?
Bills do not normally generate JEs so that is an interesting question. Why is a JE being generated in your case?

I have seen some companies using JE for all kind of transactions i.e. vendor payment, customer payment, book revenue etc. It could be one of these
OK so after further investigation it appears we are manually creating the JEs on afterSubmit to record commission debit/credit. I have found a way to link it back to the Bill.
Thanks guys.