1. Discuss Accounting Information Systems by giving examples of how to install and use a specific one (LO 1: K-TU) 2. The importance of sound internal controls in an ERP system cannot be over-estimated. The integrated nature of ERP systems means that unless every data item is validated and checked for accuracy at the time of initial entry, errors will automatically propagate throughout the system. There are preventive controls, detective controls and corrective controls. (LO2: K-PA) Required: (i) Explain each of these (preventive, detective, corrective) controls.