diff --git a/examples/dynamoathenamigration/migration.go b/examples/dynamoathenamigration/migration.go
index 952cc906720..3ed9a6a4878 100644
--- a/examples/dynamoathenamigration/migration.go
+++ b/examples/dynamoathenamigration/migration.go
@@ -38,6 +38,7 @@ import (
 	dynamoTypes "github.com/aws/aws-sdk-go-v2/service/dynamodb/types"
 	"github.com/aws/aws-sdk-go-v2/service/s3"
 	"github.com/aws/aws-sdk-go-v2/service/sns"
+	"github.com/google/uuid"
 	"github.com/gravitational/trace"
 	log "github.com/sirupsen/logrus"
 	"golang.org/x/exp/maps"
@@ -278,9 +279,11 @@ func (t *task) waitForCompletedExport(ctx context.Context, exportARN string) (ex
 			select {
 			case <-ctx.Done():
 				return "", trace.Wrap(ctx.Err())
-			case <-time.After(10 * time.Second):
+			case <-time.After(30 * time.Second):
 				t.Logger.Debug("Export job still in progress...")
 			}
+		default:
+			return "", trace.Errorf("dynamo DescribeExport returned unexpected status: %v", exportStatus)
 		}
 
 	}
@@ -410,6 +413,10 @@ func (t *task) fromS3ToChan(ctx context.Context, dataObj dataObjectInfo, eventsC
 			return false, trace.Wrap(err)
 		}
 
+		if ev.GetID() == "" || ev.GetID() == uuid.Nil.String() {
+			ev.SetID(uuid.NewString())
+		}
+
 		// if checkpoint is present, it means that previous run ended with error
 		// and we want to continue from last valid checkpoint.
 		// We have list of checkpoints because processing is done in async way with
@@ -433,7 +440,7 @@ func (t *task) fromS3ToChan(ctx context.Context, dataObj dataObjectInfo, eventsC
 			return false, ctx.Err()
 		}
 
-		if count%100 == 0 {
+		if count%1000 == 0 && !t.DryRun {
 			t.Logger.Debugf("Sent on buffer %d/%d events from %s", count, dataObj.ItemCount, dataObj.DataFileS3Key)
 		}
 	}
@@ -534,13 +541,22 @@ func (t *task) loadEmitterCheckpoint(ctx context.Context, exportARN string) (*ch
 	return &out, nil
 }
 
+type eventWithErr struct {
+	event apievents.AuditEvent
+	err   error
+}
+
 func (t *task) emitEvents(ctx context.Context, eventsC <-chan apievents.AuditEvent, exportARN string) error {
 	if t.DryRun {
-		// in dryRun we just want to count events, validation is done when reading from file.
+		var invalidEvents []eventWithErr
 		var count int
 		var oldest, newest apievents.AuditEvent
 		for event := range eventsC {
 			count++
+			if validateErr := validateEvent(event); validateErr != nil {
+				invalidEvents = append(invalidEvents, eventWithErr{event: event, err: validateErr})
+				continue
+			}
 			if oldest == nil && newest == nil {
 				// first iteration, initialize values with first event.
 				oldest = event
@@ -556,6 +572,12 @@ func (t *task) emitEvents(ctx context.Context, eventsC <-chan apievents.AuditEve
 		if count == 0 {
 			return errors.New("there were not events from export")
 		}
+		if len(invalidEvents) > 0 {
+			for _, eventWithErr := range invalidEvents {
+				t.Logger.Debugf("Event %q %q %v is invalid: %v", eventWithErr.event.GetType(), eventWithErr.event.GetID(), eventWithErr.event.GetTime().Format(time.RFC3339), eventWithErr.err)
+			}
+			return trace.Errorf("there are %d invalid items", len(invalidEvents))
+		}
 		t.Logger.Infof("Dry run: there are %d events from %v to %v", count, oldest.GetTime(), newest.GetTime())
 		return nil
 	}
@@ -609,3 +631,18 @@ func (t *task) emitEvents(ctx context.Context, eventsC <-chan apievents.AuditEve
 	}
 	return trace.Wrap(workersErr)
 }
+
+func validateEvent(event apievents.AuditEvent) error {
+	if event.GetTime().IsZero() {
+		return trace.BadParameter("empty event time")
+	}
+	if _, err := uuid.Parse(event.GetID()); err != nil {
+		return trace.BadParameter("invalid uid format: %v", err)
+	}
+	oneOf, err := apievents.ToOneOf(event)
+	if err != nil {
+		return trace.Wrap(err)
+	}
+	_, err = oneOf.Marshal()
+	return trace.Wrap(err)
+}
diff --git a/examples/dynamoathenamigration/migration_test.go b/examples/dynamoathenamigration/migration_test.go
index 3368d5d5df2..d94ec2bbb11 100644
--- a/examples/dynamoathenamigration/migration_test.go
+++ b/examples/dynamoathenamigration/migration_test.go
@@ -430,3 +430,83 @@ func generateDynamoExportData(n int) string {
 	}
 	return sb.String()
 }
+
+func TestMigrationDryRunValidation(t *testing.T) {
+	validEvent := func() apievents.AuditEvent {
+		return &apievents.AppCreate{
+			Metadata: apievents.Metadata{
+				Time: time.Date(2023, 5, 1, 12, 15, 0, 0, time.UTC),
+				ID:   uuid.NewString(),
+			},
+		}
+	}
+	tests := []struct {
+		name    string
+		events  func() []apievents.AuditEvent
+		wantLog string
+		wantErr string
+	}{
+		{
+			name: "valid events",
+			events: func() []apievents.AuditEvent {
+				return []apievents.AuditEvent{
+					validEvent(), validEvent(),
+				}
+			},
+		},
+		{
+			name: "event without time",
+			events: func() []apievents.AuditEvent {
+				eventWithoutTime := validEvent()
+				eventWithoutTime.SetTime(time.Time{})
+				return []apievents.AuditEvent{
+					validEvent(), eventWithoutTime,
+				}
+			},
+			wantLog: "is invalid: empty event time",
+			wantErr: "1 invalid",
+		},
+		{
+			name: "event with wrong uuid",
+			events: func() []apievents.AuditEvent {
+				eventWithInvalidUUID := validEvent()
+				eventWithInvalidUUID.SetID("invalid-uuid")
+				return []apievents.AuditEvent{
+					validEvent(), eventWithInvalidUUID,
+				}
+			},
+			wantLog: "is invalid: invalid uid format: invalid UUID length",
+			wantErr: "1 invalid",
+		},
+	}
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			// Migration cli logs output from validation to logger.
+			var logBuffer bytes.Buffer
+			log := utils.NewLoggerForTests()
+			log.SetOutput(&logBuffer)
+
+			tr := &task{
+				Config: Config{
+					Logger: log,
+					DryRun: true,
+				},
+			}
+			c := make(chan apievents.AuditEvent, 10)
+			for _, e := range tt.events() {
+				c <- e
+			}
+			close(c)
+			err := tr.emitEvents(context.Background(), c, "" /* exportARN not used in dryRun */)
+			if tt.wantErr != "" {
+				require.ErrorContains(t, err, tt.wantErr)
+			} else {
+				require.NoError(t, err)
+			}
+
+			if tt.wantLog != "" {
+				require.Contains(t, logBuffer.String(), tt.wantLog)
+			}
+		})
+	}
+}