diff --git a/api/server/apps_test.go b/api/server/apps_test.go
index 588274f89..004fdd090 100644
--- a/api/server/apps_test.go
+++ b/api/server/apps_test.go
@@ -48,7 +48,7 @@ func TestAppCreate(t *testing.T) {
 		{datastore.NewMock(), logs.NewMock(), "/v1/apps", `{ "app": { "name": "teste" } }`, http.StatusOK, nil},
 	} {
 		rnr, cancel := testRunner(t)
-		srv := testServer(test.mock, &mqs.Mock{}, test.logDB, rnr)
+		srv := testServer(test.mock, &mqs.Mock{}, test.logDB, rnr, DefaultEnqueue)
 		router := srv.Router
 
 		body := bytes.NewBuffer([]byte(test.body))
@@ -92,7 +92,7 @@ func TestAppDelete(t *testing.T) {
 		), logs.NewMock(), "/v1/apps/myapp", "", http.StatusOK, nil},
 	} {
 		rnr, cancel := testRunner(t)
-		srv := testServer(test.ds, &mqs.Mock{}, test.logDB, rnr)
+		srv := testServer(test.ds, &mqs.Mock{}, test.logDB, rnr, DefaultEnqueue)
 
 		_, rec := routerRequest(t, srv.Router, "DELETE", test.path, nil)
 
@@ -122,7 +122,7 @@ func TestAppList(t *testing.T) {
 	defer cancel()
 	ds := datastore.NewMock()
 	fnl := logs.NewMock()
-	srv := testServer(ds, &mqs.Mock{}, fnl, rnr)
+	srv := testServer(ds, &mqs.Mock{}, fnl, rnr, DefaultEnqueue)
 
 	for i, test := range []struct {
 		path          string
@@ -159,7 +159,7 @@ func TestAppGet(t *testing.T) {
 	defer cancel()
 	ds := datastore.NewMock()
 	fnl := logs.NewMock()
-	srv := testServer(ds, &mqs.Mock{}, fnl, rnr)
+	srv := testServer(ds, &mqs.Mock{}, fnl, rnr, DefaultEnqueue)
 
 	for i, test := range []struct {
 		path          string
@@ -218,7 +218,7 @@ func TestAppUpdate(t *testing.T) {
 		), logs.NewMock(), "/v1/apps/myapp", `{ "app": { "name": "othername" } }`, http.StatusConflict, nil},
 	} {
 		rnr, cancel := testRunner(t)
-		srv := testServer(test.mock, &mqs.Mock{}, test.logDB, rnr)
+		srv := testServer(test.mock, &mqs.Mock{}, test.logDB, rnr, DefaultEnqueue)
 
 		body := bytes.NewBuffer([]byte(test.body))
 		_, rec := routerRequest(t, srv.Router, "PATCH", test.path, body)
diff --git a/api/server/routes_test.go b/api/server/routes_test.go
index b772f628a..5842ccd97 100644
--- a/api/server/routes_test.go
+++ b/api/server/routes_test.go
@@ -24,7 +24,7 @@ type routeTestCase struct {
 
 func (test *routeTestCase) run(t *testing.T, i int, buf *bytes.Buffer) {
 	rnr, cancel := testRunner(t)
-	srv := testServer(test.ds, &mqs.Mock{}, test.logDB, rnr)
+	srv := testServer(test.ds, &mqs.Mock{}, test.logDB, rnr, DefaultEnqueue)
 
 	body := bytes.NewBuffer([]byte(test.body))
 	_, rec := routerRequest(t, srv.Router, test.method, test.path, body)
@@ -131,7 +131,7 @@ func TestRouteDelete(t *testing.T) {
 		), logs.NewMock(), "/v1/apps/a/routes/myroute", "", http.StatusOK, nil},
 	} {
 		rnr, cancel := testRunner(t)
-		srv := testServer(test.ds, &mqs.Mock{}, test.logDB, rnr)
+		srv := testServer(test.ds, &mqs.Mock{}, test.logDB, rnr, DefaultEnqueue)
 		_, rec := routerRequest(t, srv.Router, "DELETE", test.path, nil)
 
 		if rec.Code != test.expectedCode {
@@ -162,7 +162,7 @@ func TestRouteList(t *testing.T) {
 	ds := datastore.NewMock()
 	fnl := logs.NewMock()
 
-	srv := testServer(ds, &mqs.Mock{}, fnl, rnr)
+	srv := testServer(ds, &mqs.Mock{}, fnl, rnr, DefaultEnqueue)
 
 	for i, test := range []struct {
 		path          string
@@ -201,7 +201,7 @@ func TestRouteGet(t *testing.T) {
 	ds := datastore.NewMock()
 	fnl := logs.NewMock()
 
-	srv := testServer(ds, &mqs.Mock{}, fnl, rnr)
+	srv := testServer(ds, &mqs.Mock{}, fnl, rnr, DefaultEnqueue)
 
 	for i, test := range []struct {
 		path          string
diff --git a/api/server/runner.go b/api/server/runner.go
index 6873d0f6f..8b1bc0457 100644
--- a/api/server/runner.go
+++ b/api/server/runner.go
@@ -245,8 +245,14 @@ func (s *Server) serve(ctx context.Context, c *gin.Context, appName string, rout
 		priority := int32(0)
 		newTask.Priority = &priority
 		newTask.Payload = string(pl)
+
 		// Push to queue
-		enqueue(c, s.MQ, newTask)
+		_, err = enqueue(c, s.MQ, newTask)
+		if err != nil {
+			handleErrorResponse(c, err)
+			return true
+		}
+
 		log.Info("Added new task to queue")
 		c.JSON(http.StatusAccepted, map[string]string{"call_id": newTask.ID})
 
diff --git a/api/server/runner_test.go b/api/server/runner_test.go
index 64d4f86bb..de12b54d2 100644
--- a/api/server/runner_test.go
+++ b/api/server/runner_test.go
@@ -7,6 +7,7 @@ import (
 	"strings"
 	"testing"
 
+	"errors"
 	"gitlab-odx.oracle.com/odx/functions/api/datastore"
 	"gitlab-odx.oracle.com/odx/functions/api/logs"
 	"gitlab-odx.oracle.com/odx/functions/api/models"
@@ -35,7 +36,7 @@ func TestRouteRunnerGet(t *testing.T) {
 		}, nil, nil, nil,
 	)
 	logDB := logs.NewMock()
-	srv := testServer(ds, &mqs.Mock{}, logDB, rnr)
+	srv := testServer(ds, &mqs.Mock{}, logDB, rnr, DefaultEnqueue)
 
 	for i, test := range []struct {
 		path          string
@@ -79,7 +80,7 @@ func TestRouteRunnerPost(t *testing.T) {
 		}, nil, nil, nil,
 	)
 	fnl := logs.NewMock()
-	srv := testServer(ds, &mqs.Mock{}, fnl, rnr)
+	srv := testServer(ds, &mqs.Mock{}, fnl, rnr, DefaultEnqueue)
 
 	for i, test := range []struct {
 		path          string
@@ -131,7 +132,7 @@ func TestRouteRunnerExecution(t *testing.T) {
 	)
 
 	fnl := logs.NewMock()
-	srv := testServer(ds, &mqs.Mock{}, fnl, rnr)
+	srv := testServer(ds, &mqs.Mock{}, fnl, rnr, DefaultEnqueue)
 
 	for i, test := range []struct {
 		path            string
@@ -171,6 +172,45 @@ func TestRouteRunnerExecution(t *testing.T) {
 	}
 }
 
+func TestFailedEnqueue(t *testing.T) {
+	buf := setLogBuffer()
+	rnr, cancelrnr := testRunner(t)
+	defer cancelrnr()
+
+	ds := datastore.NewMockInit(
+		[]*models.App{
+			{Name: "myapp", Config: models.Config{}},
+		},
+		[]*models.Route{
+			{Path: "/dummy", AppName: "myapp", Image: "dummy/dummy", Type: "async"},
+		}, nil, nil,
+	)
+	fnl := logs.NewMock()
+
+	enqueue := func(ctx context.Context, mq models.MessageQueue, task *models.Task) (*models.Task, error) {
+		return nil, errors.New("Unable to push task to queue")
+	}
+
+	srv := testServer(ds, &mqs.Mock{}, fnl, rnr, enqueue)
+	for i, test := range []struct {
+		path            string
+		body            string
+		method          string
+		expectedCode    int
+		expectedHeaders map[string][]string
+	}{
+		{"/r/myapp/dummy", ``, "POST", http.StatusInternalServerError, nil},
+	} {
+		body := strings.NewReader(test.body)
+		_, rec := routerRequest(t, srv.Router, test.method, test.path, body)
+		if rec.Code != test.expectedCode {
+			t.Log(buf.String())
+			t.Errorf("Test %d: Expected status code to be %d but was %d",
+				i, test.expectedCode, rec.Code)
+		}
+	}
+}
+
 func TestRouteRunnerTimeout(t *testing.T) {
 	t.Skip("doesn't work on old Ubuntu")
 	buf := setLogBuffer()
@@ -187,7 +227,7 @@ func TestRouteRunnerTimeout(t *testing.T) {
 		}, nil, nil,
 	)
 	fnl := logs.NewMock()
-	srv := testServer(ds, &mqs.Mock{}, fnl, rnr)
+	srv := testServer(ds, &mqs.Mock{}, fnl, rnr, DefaultEnqueue)
 
 	for i, test := range []struct {
 		path            string
diff --git a/api/server/server_test.go b/api/server/server_test.go
index a2ff1c74e..78c81abaf 100644
--- a/api/server/server_test.go
+++ b/api/server/server_test.go
@@ -22,16 +22,16 @@ import (
 
 var tmpDatastoreTests = "/tmp/func_test_datastore.db"
 
-func testServer(ds models.Datastore, mq models.MessageQueue, logDB models.FnLog, rnr *runner.Runner) *Server {
+func testServer(ds models.Datastore, mq models.MessageQueue, logDB models.FnLog, rnr *runner.Runner, enqueue models.Enqueue) *Server {
 	ctx := context.Background()
 
 	s := &Server{
 		Runner:     rnr,
 		Router:     gin.New(),
 		Datastore:  ds,
-		LogDB:      nil,
+		LogDB:      logDB,
 		MQ:         mq,
-		Enqueue:    DefaultEnqueue,
+		Enqueue:    enqueue,
 		routeCache: cache.New(60*time.Second, 5*time.Minute),
 	}
 
@@ -102,7 +102,7 @@ func TestFullStack(t *testing.T) {
 	rnr, rnrcancel := testRunner(t)
 	defer rnrcancel()
 
-	srv := testServer(ds, &mqs.Mock{}, logDB, rnr)
+	srv := testServer(ds, &mqs.Mock{}, logDB, rnr, DefaultEnqueue)
 
 	for _, test := range []struct {
 		name              string