Setup Group Category and Setup Group Key 
Definition
The setup group category and setup group key characterize the setup state of a work center that is necessary for processing an operation.
Usage
The setup group key and setup group category are maintained in the operation. The setup states in the operations are evaluated in capacity leveling for setup time adjustment when dispatching to the best possible time for setup and for setup time optimization.
Structure
Several setup group keys can be combined to form a setup group category.