My Magento application is connected to 3rd party system that manages orders and also updates shipping tracking information using Magento's Soap API.
But for few orders we are facing
#<SOAP::FaultError: Cannot do shipment for order.
and due to this shipping tracking information is not updated.
I am not able to figure out What could be possible reason for such error?
Has any one faced such issue? whats need's to be done.