I have tried printing an EVRi Business shipping label and am seeing an error returned:

missing_property: Property value is missing or null: parcelDetails.itemDescription 


The error means that system was unable to retrieve the item's description, which is a mandatory element.

Please make sure the item either has a 'CommodityDescription' extended property added and mapped accordingly with a courier property (Shipping > Integrations > Properties), or the Title field of the item is filled in. The system will automatically use the Item's title as a description, if CommodityDescription property is missing.