When making a billing payment that exceeds a set amount there should be a prompt for confirmation with security override if permission not met.
Same behavior should occur for over-payments via check/credit/debit.
Security Level should specify payment limit threshold.
Prompt Should detail the behavior.
Example,
Payment Confirmation
**Payment Confirmation**
"Payment amount: $x,xxx.xx exceeds payment limit." "Payment amount: $X,XXX.XX would result in over payment"
" Would you like to make payment anyway? " " Would you like to make payment anyway and apply "
" " " overpayment to credit balance? "
[y]/[n] [y]/[n]
''IF USER SELECTS YES, CHECK PERMISSION''
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+------------------------------------------------------+
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''ALLOW IF USER MEETS PERMISSION'' ''DENY IF USER DOES NOT MEET PERMISIION, PROMPT FOR OVERRIDE''
''IF USER SELECTS NO, RETURN TO PAYMENT SCREEN WITH NO CHANGES''