Pop-Up Blocker if Transaction is Unbalanced

Recently we have been running into issues with applying payments in Cash Management in the Receivables section not applying payments equally. For example, if a customer $600 and their balance is $500.00, the module will let you submit the transaction without placing the extra $100 anywhere and the transaction is unbalanced. My suggestion is to make it like Financials and Utility Billing where the system will not let you submit the transaction unless both the payment amount and the transaction total match and a pop-up to come on the screen as a warning so you can place the extra amount where it needs to go, instead of finding the issue later on.