What are the problems in Jack's internal control process?

Incompatible job separation and authorization approval control activities have not been well implemented, and seal management is out of control.

1. Incompatible job separation and authorization approval control activities have not been well implemented: Incompatible job separation control requires enterprises to comprehensively and systematically analyze and sort out incompatible jobs involved in business processes, implement corresponding separation measures, and form a working mechanism that performs its own duties and restricts each other.

2. The seal management is out of control: the financial seal and the administrative seal are combined into one, which is controlled by the administrative personnel, and the cashier is not effectively monitored when stamping.