Error Code,Meaning,Reference 0,Confirmation,[RFC2205] 1,Admission Control Failure,[RFC2205][RFC5946] 2,Policy Control Failure,[RFC2205][RFC5946] 3,No path information for this Resv message.,[RFC2205] 4,No sender information for this Resv message.,[RFC2205] 5,Conflicting reservation style,[RFC2205] 6,Unknown reservation style,[RFC2205] 7,Conflicting dest ports,[RFC2205] 8,Conflicting sender ports,[RFC2205] 9-11,Reserved,[RFC2205] 12,Service preempted,[RFC2205] 13,Unknown object class,[RFC2205] 14,Unknown object C-Type,[RFC2205] 15-19,Reserved,[RFC2205] 20,Reserved for API,[RFC2205] 21,Traffic Control Error,[RFC2205] 22,Traffic Control System error,[RFC2205] 23,RSVP System Error,[RFC2205] 24,Routing Problem,[RFC3209] 25,Notify Error,[RFC3209] 26,NEW-AGGREGATE-NEEDED,[RFC3175] 27,Diffserv Error,[RFC3270] 28,Diff-Serv-aware TE Error,[RFC4124] 29,Unknown Attributes TLV,[RFC5420] 30,Unknown Attributes Bit,[RFC5420] 31,Alarms,[RFC4783] 32,Call Management,[RFC4974] 33,User Error Spec,[RFC5284] 34,Reroute,[RFC5710] 35,Handover Procedure Failure,[RFC5852] 36,Unrecoverable Receiver Proxy Error,[RFC5946] 37,RSVP over MPLS Problem,[RFC6016] 38,LSP Hierarchy Issue,[RFC6107] 39,VCAT Call Management,[RFC6344] 40,OAM Problem,[RFC7260] 41,Duplicate TLV,[RFC8169] 42,Duplicate sub-TLV,[RFC8169] 43,RTM_SET TLV Absent,[RFC8169] 44,FRR Bypass Assignment Error,[RFC8271] 45-251,Unassigned, 252-255,Reserved for Private Use,[RFC2205]