If you add a new shipping method in Brightpearl or edit a shipping method in Brightpearl (including deleting a shipping method), you may notice that in when creating a new shipping rule or editing an existing rule, the shipping method mapping options don't reflect your newly updated Brightpearl shipping methods.

You can refresh the your Brightpearl shipping methods by navigating to your Brightpearl settings page https://shiptheory.com/brightpearl/edit  and simply hitting the save button.

If you then navigate back to the rules page, you should see all your current shipping methods are once again upto date and correct.

When you're mapping your shipping methods to a rule make sure they're word for word the same as they are in your Brightpearl account otherwise they may not work as intended.