Hilltop Lid (Hilltop) is a leading manufacturer of baby furniture, with its manufacturing operations located in Sydney. Hilltop purchases a combination of parts and raw materials for its products from various Australian suppliers. You are conducting the audit of Hilltop for the year ended 30 June 2015 and have prepared the following summary of the inventory purchasing process:

a) Pre-numbered purchase requisitions are prepared by the warehouse or production staff requesting the item and must be approved by the purchasing manager for items up to $10,000 and by both the purchasing manager and the chief financial officer for items over $10,000.

b) Pre-numbered purchase orders are prepared from the purchase requisitions by the purchasing clerks and approved by the purchasing manager.

c) When goods arrive in the receiving area, the receiving clerk checks the quantity and description of the goods against a copy of the purchase order and the supplier's delivery documentation. A pre-numbered receiving report is then prepared and signed by the receiving clerk.

d) When supplier invoices are received by the accounting department, the accounts payable clerk checks the quantity and description of the goods and the prices on the purchase invoices against a copy of the purchase order and the receiving report before processing.

e) At month end, the accounts payable clerk reviews receiving reports and purchase order files for any items where a purchase invoice has not been received and the goods have been delivered, in order to identify and record accruals.

f) The accounts payable clerk refers to the standard general ledger code file and records a general ledger account code on the purchase invoice before signing it. Coding is reviewed by the financial accountant prior to processing the invoices.

Required: Identify five control activities over the purchasing cycle and explain their objective.