Alerts in Financial Accounting

Dear Gurus

I am using R3 4.7

Can somebody give me an idea of how to configure Alerts in Financial Accounting. My tasks is to generate an alert when a customer due date is cross and the payment of that invoice has not been received.

I want to generate Alerts in R3 System rather than Portal or XI.

Please help me out as this is really urgent.

Regards

Sajid