gravitational/teleport · error

proto: wrong wireType = %d for field Metadata

Error message

proto: wrong wireType = %d for field Metadata

What it means

Protobuf unmarshal guard in generated code for IdentityCenterAccountAssignment: the Metadata field (field 4) arrived with an unexpected wire type instead of the length-delimited type expected for an embedded message.

Source

Thrown at api/client/proto/authservice.pb.go:61060

					break
				}
			}
			intStringLen := int(stringLen)
			if intStringLen < 0 {
				return ErrInvalidLengthAuthservice
			}
			postIndex := iNdEx + intStringLen
			if postIndex < 0 {
				return ErrInvalidLengthAuthservice
			}
			if postIndex > l {
				return io.ErrUnexpectedEOF
			}
			m.Version = string(dAtA[iNdEx:postIndex])
			iNdEx = postIndex
		case 4:
			if wireType != 2 {
				return fmt.Errorf("proto: wrong wireType = %d for field Metadata", wireType)
			}
			var msglen int
			for shift := uint(0); ; shift += 7 {
				if shift >= 64 {
					return ErrIntOverflowAuthservice
				}
				if iNdEx >= l {
					return io.ErrUnexpectedEOF
				}
				b := dAtA[iNdEx]
				iNdEx++
				msglen |= int(b&0x7F) << shift
				if b < 0x80 {
					break
				}
			}
			if msglen < 0 {
				return ErrInvalidLengthAuthservice

View on GitHub (pinned to 1283425b60)

Solutions

1. Verify sender and receiver use compatible protobuf definitions/versions of authservice
2. Check for truncated or corrupted payloads and re-send the request

When it happens

Trigger: Thrown at api/client/proto/authservice.pb.go:61060 when the library encounters an invalid state.

Common situations: See trigger scenarios.

AI-assisted analysis of gravitational/teleport@1283425b60 (2026-09-02). Data as JSON: /api/errors/6ce6dcd1418160a0. Report an issue: GitHub.