In the context of an Oracle Accounts Payable, What are the improvement suggestions you would put forward, in order to streamline a perfect AP process?

After Considering general AP Procedures such as Proper booking and closure of Prepayments, Periodical preparation and follow up on aging reports, Proper Expense & Asset Bookings, Follow strict impress system of petty cash And professional handling of Suppliers, What all are your suggestions for an improvement in AP module? What all are the possibilities to automate an AP module in oracle? Would you please advise if you have an automated AP procedure fixed in your company? And if you have implemented any modifications in the existing systems for the sake of improvements, please advise those as well. In short please brief your valid contributions and most liked oracle functionalities in Oracle AP Module.