Error can include
Error From Intersoft:Error Code:E1205 Description:The field terms exceeds the maximum allowable length of 3.
For the Royal Mail service, you are trying to use please check the following:
Click Shipping Management then Extras.
Click Courier Service Codes.
Search for the Royal Mail service affected.
Click Edit.
Check data entered in ExtraCode6.
Check for spaces or incorrect values.
ExtraCode6 is used as the Incoterm.