Different parts of an organisation will have different ideas about the amount of stock that should be held, and this may lead to conflicts.
They will always want low levels of all types of stock, because it ties up money that could be used in potentially more profitable ways.
They will seek high levels of raw materials and work in progress so they can maximise their output. But they will tend to be indifferent to the level of finished goods, because it is not part of their work.
They will want high levels of finished goods stock in order to be ready to meet any unexpected increases in consumer demand. They would hate to have to turn down a sale because they did not have enough stock. The sales department will tend not to mind what levels of raw materials and work in progress are held.