SAP Message V6567 - More than 1 shipment exists for external ID1 & and forwarding agent &

Diagnosis
You have attempted to refer to an existing shipment. Using thereference parameters of the IDoc (E1TPSHH-SRVID1 = <(>&<)>V1
, e1tpshh-carrid = <(><)>v2), however, the system was able to findmore than one shipment. The IDoc cannot be allocated to one uniqueshipment because the parameters for the shipment type and thetransportation planning point are also the same.

System Response
Processing is terminated.