The detailed data flow diagram in Figure (b) decomposes the DFD for the expenditure cycle in Figure (a). Further decompose the process numbered 1.4.4, Receive Invoice, indetail.

NOD Figure (b) LOWER-LEVEL DFD FOR AP PROCESS 1.4 Vendor Authorize Purchase Order Goods Receive Goods Invoice Purchase Req Purchase Order Rec Rept 1.4.1 1.4.2 1.4.3 Receive Purch Req Receive PO Receive Rec Rept Receive Invoice PR File Open PO File Invoice File Prepare Payment File 1.4.5 Review and Compare Support 1.4.7 Payment Voucher Prepare Documents Approved Lialiesaymen AP Sub Ledger Voucher Post 1.4.6 Post Update AP Voucher Register Update General Posting Data Ledger Journal Voucher