What are the qualities of good internal control system?

In basic they are (in no particular order).

1 - Most important, is the safeguard of assets.

2 - All employees must be encouraged to follow company policy and work towards the company's goals.

3- The promotion of operational efficiency.

4- A company must ensure accurate and reliable accounting systems and records

5- Maintaining complience to the legal requirements of (a) its counrty of registration (b) of countries of operation.