Users who owe money must be friends with the user(s) who they owe (users who paid money).
Amit Dubey
This validation is not required, I should be able to add expense which is paid by someone else and I can add this on his behalf and this payment can be split with multiple persons not necessarily need to be friend of each other , since I have started using this app but it would require that they should also use this app and those people may be incompetent to use any sort of apps or may not be using internet/computer at all.