This structure eliminates redundant data and is shared by all SAP Modules. It is a critical aspect of the robustness of the system. Classification is the assignment of objects to a class. Each class has standard characteristics. Matchcodes are query tools used to find specific information using search methods.
Security is administered for objects, profiles and authorizations.
Users are only authorized to see or change the parts of the system required by their job responsibilities. In order to understand a system like SAP a thorough understanding of the events and relationships that take place in a business is required. It is not enough to just realize the Sales, Production, Finance and Accounting have jobs to do in a business. The exact details of each action, the timing of that action and its interrelationships with every other process must be understood. In many large operations there may be no person that has a complete grasp of the situation.