If you're seeing this error (Error From Intersoft:Error Code:E1437 Description:The Shipping Charges must be positive) when trying to create a shipment with Royal Mail (Intersoft), this would be due to the Shipping Total being a Negative Value.
Please check the Order Details and ensure the Shipping Total is not a negative value, once corrected, please try generating the shipment again.
Royal Mail - The Shipping Charges must be positive
This help guide will go through how to resolve errors relating to E1437 for Royal Mail.
Written by Tom Higgs
Updated over 2 months ago