Put a number around this / sequential it out.

DFD of Purchases System Inventory Subsidiary Ledger Inventory Levels Valid Vendor File Supplier Supplier AP Pending File Name, Address, Terms Monitor Inventory Records Purchase Requisition PO, Rec Rpt Invoice PO, Rec Rept Purchase Order Copy 2 Journal Voucher PO Copy 4 Set up Account Payable Amount Due, Due Date Prepare Purchase Purchase Order Order Purchase order 4 (Blind Bill of Copy) Lading, Packing Journal Voucher File Open/Closed PO File Purchase Detail PO, Rec Rep. Invoice AP Sub Ledger (Voucher Register) Approved Journal Voucher Rec Rpt Copy 2 Slip Post to General Ledger Receive Goods Receiving Report Copy 3 Purchases Journal Open AP File (Voucher Payable) JV Posting Detail Receiving Report Receiving Report Copy 4 Inventory summary General Ledger Rec Rept Copy 5 Update Inventory Records Receiving Report File Qunantiy Received Stores Inventory Sub Ledger