In BUSY, you can find reports to see how many days a customer payment has been outstanding by accessing the Accounts Receivable Aging report.
Step 1 :This report will consolidate all transactions for that party, including invoices, payments, and adjustments.
Step 2 :Look for a report titled Bills Receivableor Outstanding Bills.
Step 3 :Generate the report, and it will show you the outstanding bills receivable for the selected parties or all parties, including details like invoice numbers, due dates, and amounts