diff --git a/api/pkg/inference-logger/logger/mlobs_sink.go b/api/pkg/inference-logger/logger/mlobs_sink.go
index 245b4c024..ccada2b26 100644
--- a/api/pkg/inference-logger/logger/mlobs_sink.go
+++ b/api/pkg/inference-logger/logger/mlobs_sink.go
@@ -80,6 +80,11 @@ func (m *MLObsSink) newPredictionLog(rawLogEntry *LogEntry) (*upiv1.PredictionLo
 	if err != nil {
 		return nil, err
 	}
+	// If there is only one prediction, session id alone is enough to for unique prediction id
+	if len(standardModelRequest.Instances) == 1 && standardModelRequest.RowIds == nil {
+		standardModelRequest.RowIds = []string{""}
+	}
+
 	if len(standardModelRequest.RowIds) != len(standardModelResponse.Predictions) {
 		return nil, fmt.Errorf("%w: number of row ids and predictions do not match", ErrMalformedLogEntry)
 	}
diff --git a/api/pkg/inference-logger/logger/mlobs_sink_test.go b/api/pkg/inference-logger/logger/mlobs_sink_test.go
index 6043b730b..627b505bb 100644
--- a/api/pkg/inference-logger/logger/mlobs_sink_test.go
+++ b/api/pkg/inference-logger/logger/mlobs_sink_test.go
@@ -77,16 +77,28 @@ func TestLogEntryToPredictionLogConversion(t *testing.T) {
 			nil,
 		},
 		{
-			"empty row ids",
+			"empty row ids, multiple rows",
 			&StandardModelRequest{
 				SessionId: "1234",
 				Instances: [][]*float64{
 					{asInstanceValue(1.0)},
+					{asInstanceValue(2.0)},
 				},
 			},
 			newTestStandardModelResponse([]float64{0.0}),
 			ErrMalformedLogEntry,
 		},
+		{
+			"empty row ids, single rows",
+			&StandardModelRequest{
+				SessionId: "1234",
+				Instances: [][]*float64{
+					{asInstanceValue(1.0)},
+				},
+			},
+			newTestStandardModelResponse([]float64{0.0}),
+			nil,
+		},
 		{
 			"missing session id",
 			&StandardModelRequest{