ReadonlycodeError identifier.
ReadonlyitemUnique identifier of the Line Item or Custom Line Item.
Readonlymessage"Inconsistent shipping details for $subject with ID $itemId. $subject quantity is $itemQuantity and shippingTargets quantity sum is $quantitySum."
Readonlysubject"LineItem" or "CustomLineItem"
Returned when Line Item or Custom Line Item quantities set under ItemShippingDetails do not match the sum of the quantities in their respective shipping details.