The following error (Error Only Single Parcels Supported on Evri Business API!) relates to increasing the number of parcels on Orders shipping through an Evri Business Account, this is a rule put in place by Evri and not something we can control, for Evri Business shipments they only support single parcels when generating shipments from an API (Mintsoft).
Evri Business - Only Single Parcels Supported on Evri Business API!

Written by Tom Higgs
Updated over 2 months ago