Summarize the document flow, or steps, in a voucher system by placing the following actions in their correct order of occurrence.

$($i$)$ Instructions

A purchase order is completed and a copy is placed in voucher.

A receiving report is completed when the order arrives and placed in voucher.

A purchase requisition is filled out and placed in voucher.

The cashier issues a check for the amount of the invoice.

The accounting department approves payment of the invoice and approval is placed in voucher.