SAP Message V6568 - A transportation service agent has not been specified

Diagnosis
Using the IDoc SHPCPR, you wanted to set the status 'Rejected by theforwarding agent' for a number of deliveries. In the IDoc, however,there was no forwarding agent specified in the field E1TPSHH-CARRID.The forwarding agent is a compulsory field.

System Response
Processing is terminated.