What is "Matching Number" in a Journal Item?
This is concerning Enterprise V11.
I notice there is a field called "Matching Number" in a Journal Item. It usually has value like A50, A171 etc.
When I click on it, it shows a form that looks very much like a Journal Entry, basically binding two Journal Entries together.
I come across some Journal Entry in which the Journal Items have no Matching Number. Is this a valid state? when should a JE have Matching Number and when it shouldn't have one?