You have been asked to automate the Accounts Payable process. During your interviews with users you identify four major events as follows:

I. Purchase Order Flow 1. The Marketing Department sends a purchase order (P.O.) form for books to the Accounts Payable System (APS).

2. APS assigns a P.O. # and sends the P.O.-White copy to the Vendor and files the P.O.-Pink copy in a file cabinet in P.O.#.sequence.

II. Invoice Receipt 1. A vendor sends an invoice for payment for books purchased by APS.

2. APS sends invoice to Marketing Department for authorization.

3. Marketing either returns invoice to APS approved or back to the vendor if not 4. authorized.

5. If the invoice is returned to APS it is matched up against the original P.O.-Pink. The PO and vendor invoice are then combined into a packet and prepared for the voucher process.

III. Voucher Initiation 1. APS receives the packet for vouchering. It begins this process by assigning a voucher number.
2. The Chief Accountant must approve vouchers > $5,000.
3. APS prepares another packet from the approved vouchers. This packet includes the P.O.-Pink, authorized invoice and approved voucher..
IV. Check Preparation 1. Typist receives the approved voucher packet and retrieves a numbered blank 2. check to pay the vendor.
3. Typist types a two-part check (blue,green) using data from the approved voucher and enters invoice number on the check stub.
4. APS files the approved packet with the Check-green in the permanent paid file.
5. The check is either picked up or mailed directly to the vendo