Drilldown Button 
This button is available if Accounts Receivable, Accounts Payable, or Payroll sent a selected transaction to Bank Services.
You click the Drilldown button to view a transaction in the original entry form in the source ledger. For example, you can drill down from Reconcile Statements to transactions in Accounts Receivable, and then from Accounts Receivable to the original transaction in Order Entry. You can also drill down to Accounts Payable, and then to Purchase Orders, and so on.