Invoices Lookup
The Invoices Lookup program allows you to display and
locate an Accounts Receivable Invoice using any of the several different display
and search sequences that are available in the program. 
The Invoices Lookup program is called by the Cash Application program when the Find an Invoice Button is pressed and it is primarily used to search for and to select the open invoice that a customer payment should be applied to.
More:
Display and Search Sequences