Example of linking ingredients
If the ratio of two chemicals must stay constant for the correct chemical reaction to occur, give these two chemical ingredients the same Sub#. The ratio of these two ingredients now stay constant.
Doubling the quantity of the first ingredient results in doubling the quantity of the second ingredient. This is true regardless of how the quantities are altered.
Changing the UOM does not count as a quantity change. Therefore, the quantity of other ingredients with the same Sub# does not change.