Match-IT is a manufacturing control system. The things you manufacture are referred to as your products. The description of the parts or raw materials required to make a product is referred to as a product structure. The description of how you process the parts to turn them into a product is referred to as a method. The scheduler plans your production by interpreting these methods in the context of your stock position and shop floor loading. Collectively, all of this is referred to as the Match-IT Product Model.
The method description can be very detailed, very vague or anything in between. Somewhere within this spectrum will be ‘right’ for each of your products; where is a matter of judgement. An understanding of how your methods are interpreted will help you make this judgement.