Code is for merchants who use a fulfillment service. You can enter in text here that indicates to the fulfillment center how you would like an order to be fulfilled for the rate.
Notes is internal only, but is very useful for documenting what you intended on doing when you setup the rates. We highly recommend using this field, as it won’t be very often you will need to log into Parcelify, so you may not remember.
Disabled indicates that the rate is turned off.