diff --git a/lib/NGCP/Panel/Controller/API/SubscriberRegistrations.pm b/lib/NGCP/Panel/Controller/API/SubscriberRegistrations.pm
index 475d02e5f3..cf594766a1 100644
--- a/lib/NGCP/Panel/Controller/API/SubscriberRegistrations.pm
+++ b/lib/NGCP/Panel/Controller/API/SubscriberRegistrations.pm
@@ -154,11 +154,15 @@ sub POST :Allow {
         last unless $txn_ok;
 
         $item = $self->fetch_item($c, $resource, $form, $item);
-        last unless $item;
 
-        $c->response->status(HTTP_CREATED);
-        $c->response->header(Location => sprintf('/%s%s', $c->request->path, $item->id));
-        $c->response->body(q());
+        if ($item) {
+            $c->response->status(HTTP_CREATED);
+            $c->response->header(Location => sprintf('/%s%s', $c->request->path, $item->id));
+            $c->response->body(q());
+        } else {
+            $c->response->status(HTTP_CREATED);
+            $c->response->body(q());
+        }
     }
     return;
 }
diff --git a/lib/NGCP/Panel/Controller/API/SubscriberRegistrationsItem.pm b/lib/NGCP/Panel/Controller/API/SubscriberRegistrationsItem.pm
index 7fa21b7b00..d7bd82c6cc 100644
--- a/lib/NGCP/Panel/Controller/API/SubscriberRegistrationsItem.pm
+++ b/lib/NGCP/Panel/Controller/API/SubscriberRegistrationsItem.pm
@@ -96,22 +96,26 @@ sub PATCH :Allow {
         last unless $txn_ok;
 
         $item = $self->fetch_item($c, $resource, $form, $item);
-        last unless $item;
 
-        if ('minimal' eq $preference) {
-            $c->response->status(HTTP_NO_CONTENT);
-            $c->response->header(Preference_Applied => 'return=minimal');
-            $c->response->header(Location => sprintf('%s%s', $self->dispatch_path, $item->id));
-            $c->response->body(q());
+        if ($item) {
+            if ('minimal' eq $preference) {
+                $c->response->status(HTTP_NO_CONTENT);
+                $c->response->header(Preference_Applied => 'return=minimal');
+                $c->response->header(Location => sprintf('%s%s', $self->dispatch_path, $item->id));
+                $c->response->body(q());
+            } else {
+                my $hal = $self->hal_from_item($c, $item, $form);
+                my $response = HTTP::Response->new(HTTP_OK, undef, HTTP::Headers->new(
+                    $hal->http_headers,
+                ), $hal->as_json);
+                $c->response->headers($response->headers);
+                $c->response->header(Preference_Applied => 'return=representation');
+                $c->response->header(Location => sprintf('%s%s', $self->dispatch_path, $item->id));
+                $c->response->body($response->content);
+            }
         } else {
-            my $hal = $self->hal_from_item($c, $item, $form);
-            my $response = HTTP::Response->new(HTTP_OK, undef, HTTP::Headers->new(
-                $hal->http_headers,
-            ), $hal->as_json);
-            $c->response->headers($response->headers);
-            $c->response->header(Preference_Applied => 'return=representation');
-            $c->response->header(Location => sprintf('%s%s', $self->dispatch_path, $item->id));
-            $c->response->body($response->content);
+            $c->response->status(HTTP_NO_CONTENT);
+            $c->response->body(q());            
         }
     }
 
@@ -152,22 +156,26 @@ sub PUT :Allow {
         last unless $txn_ok;
 
         $item = $self->fetch_item($c, $resource, $form, $item);
-        last unless $item;
 
-        if ('minimal' eq $preference) {
-            $c->response->status(HTTP_NO_CONTENT);
-            $c->response->header(Preference_Applied => 'return=minimal');
-            $c->response->header(Location => sprintf('%s%s', $self->dispatch_path, $item->id));
-            $c->response->body(q());
+        if ($item) {
+            if ('minimal' eq $preference) {
+                $c->response->status(HTTP_NO_CONTENT);
+                $c->response->header(Preference_Applied => 'return=minimal');
+                $c->response->header(Location => sprintf('%s%s', $self->dispatch_path, $item->id));
+                $c->response->body(q());
+            } else {
+                my $hal = $self->hal_from_item($c, $item, $form);
+                my $response = HTTP::Response->new(HTTP_OK, undef, HTTP::Headers->new(
+                    $hal->http_headers,
+                ), $hal->as_json);
+                $c->response->headers($response->headers);
+                $c->response->header(Preference_Applied => 'return=representation');
+                $c->response->header(Location => sprintf('%s%s', $self->dispatch_path, $item->id));
+                $c->response->body($response->content);
+            }
         } else {
-            my $hal = $self->hal_from_item($c, $item, $form);
-            my $response = HTTP::Response->new(HTTP_OK, undef, HTTP::Headers->new(
-                $hal->http_headers,
-            ), $hal->as_json);
-            $c->response->headers($response->headers);
-            $c->response->header(Preference_Applied => 'return=representation');
-            $c->response->header(Location => sprintf('%s%s', $self->dispatch_path, $item->id));
-            $c->response->body($response->content);
+            $c->response->status(HTTP_NO_CONTENT);
+            $c->response->body(q());            
         }
     }
 
@@ -195,7 +203,7 @@ sub delete_item {
     return unless($sub);
     NGCP::Panel::Utils::Kamailio::delete_location_contact($c,
         $sub, $item->contact);
-    NGCP::Panel::Utils::Kamailio::flush($c);
+    NGCP::Panel::Utils::Kamailio::flush($c) unless $self->suppress_flush($c);
     return 1;
 }
 
diff --git a/lib/NGCP/Panel/Role/API/SubscriberRegistrations.pm b/lib/NGCP/Panel/Role/API/SubscriberRegistrations.pm
index 43f68df91e..17457d682c 100644
--- a/lib/NGCP/Panel/Role/API/SubscriberRegistrations.pm
+++ b/lib/NGCP/Panel/Role/API/SubscriberRegistrations.pm
@@ -229,7 +229,7 @@ sub update_item {
         $sub->provisioning_voip_subscriber,
         $values
     );
-    NGCP::Panel::Utils::Kamailio::flush($c);
+    NGCP::Panel::Utils::Kamailio::flush($c) unless $self->suppress_flush($c);
 
     return $item;
 }
@@ -270,6 +270,19 @@ sub fetch_item {
     return $item;
 }
 
+sub suppress_flush {
+    
+    my ($self, $c) = @_;
+    my $suppress_flush = $c->req->param('suppress_flush');
+    if (length($suppress_flush)
+        and ('1' eq $suppress_flush
+        or 'true' eq lc($suppress_flush))) {
+        return 1;
+    }
+    return 0;
+    
+}
+
 sub valid_id {
     my ($self, $id) = @_;
     if (defined $id && length $id > 0) {