At this time, ShippingEasy has no control over this as the code is what Volusion sends back to us when we request a requested service.
In the meantime, Volusion has a code guide - you can see those codes HERE.
As we currently already have a thread running for this feature, do you mind posting here: Volusion - See requested service instead of code
This will ensure that we are able to monitor and track interest in this request. As we see interest grow, we'll re-prioritize any work around this request. Thanks in advance!