Melinda Robinson is the director of internal auditing at Sachem Manufacturing Company. She wants to test the input controls for inventory.

The input to this system is shown in the following table.

Parts Inventory Transaction File
Field Name	Field Type
Item number	Numeric
Description	Alphanumeric
Transaction date	Date
Transaction type	Alphanumeric
Document number	Alphanumeric
Quantity	Numeric
Unit cost	Monetary

What tests should Melinda perform to be sure that the controls are effective?