Triggers Data Changes in PIR (from SOP after disaggregation) Organizational data Master data Transaction data User input PIR CIR Figure 8-18: Elements of the demand management step Tasks Outcomes Create revised PIRS Revised PIRS Master data Transaction data Material master CIRS Organizational data Plant Storage location MRP elements Revised PIRS PIRS Figure 8-19: Data in the demand management step SOP Master data Transaction data Material master Material BOM Routing Goods receipts Goods issues Planning data Organizational data Plant Storage location Procurement proposals User input MRP parameters Processing key Figure 8-21: Data in the MRP step Tasks Figure 8-22 illustrates the tasks in the MRP step. These steps are performed automatically by MRP. Calculate Check planning file Determine net requirements lot size Perform scheduling Determine procurement proposals Determine dependent requirements Figure 8-22: MRP procedure Debit Bank account 100000 Supplies expense 740000 Credit Debit 500 500 Credit Figure 3-13: Posting example 2: Purchase of supplies with cash Payables - Miscellaneous 300200 Supplies expense Debit Credit Debit 2 1,000 1,000 1 11,000 740000 Bank account 100000 Credit Debit Credit 1,000 2 Purchase 2 Payment Figure 3-14: Posting example 3: Purchase of supplies on credit