diff --git a/lib/NGCP/Panel/Field/PosInteger.pm b/lib/NGCP/Panel/Field/PosInteger.pm
new file mode 100644
index 0000000000..9d4a89062c
--- /dev/null
+++ b/lib/NGCP/Panel/Field/PosInteger.pm
@@ -0,0 +1,14 @@
+package NGCP::Panel::Field::PosInteger;
+use Sipwise::Base;
+extends 'HTML::FormHandler::Field::Integer';
+
+sub validate {
+    my ( $self ) = @_;
+    my $value = $self->value;
+    $self->add_error('Value must be a positive integer')
+        if(!$self->has_errors && $value < 0);
+}
+
+1;
+
+# vim: set tabstop=4 expandtab:
diff --git a/lib/NGCP/Panel/Form/Customer/PbxAdminSubscriber.pm b/lib/NGCP/Panel/Form/Customer/PbxAdminSubscriber.pm
index 5f94a26811..5a586e244e 100644
--- a/lib/NGCP/Panel/Form/Customer/PbxAdminSubscriber.pm
+++ b/lib/NGCP/Panel/Form/Customer/PbxAdminSubscriber.pm
@@ -1,6 +1,7 @@
 package NGCP::Panel::Form::Customer::PbxAdminSubscriber;
 
 use HTML::FormHandler::Moose;
+use NGCP::Panel::Field::PosInteger;
 extends 'NGCP::Panel::Form::Customer::PbxSubscriber';
 
 has_field 'e164' => (
@@ -13,7 +14,7 @@ has_field 'e164' => (
 );
 
 has_field 'e164.cc' => (
-    type => 'PosInteger',
+    type => '+NGCP::Panel::Field::PosInteger',
     element_attr => { 
         class => ['ngcp_e164_cc'], 
         rel => ['tooltip'], 
@@ -24,7 +25,7 @@ has_field 'e164.cc' => (
 );
 
 has_field 'e164.ac' => (
-    type => 'PosInteger',
+    type => '+NGCP::Panel::Field::PosInteger',
     element_attr => { 
         class => ['ngcp_e164_ac'], 
         rel => ['tooltip'], 
@@ -35,7 +36,7 @@ has_field 'e164.ac' => (
 );
 
 has_field 'e164.sn' => (
-    type => 'PosInteger',
+    type => '+NGCP::Panel::Field::PosInteger',
     element_attr => { 
         class => ['ngcp_e164_sn'], 
         rel => ['tooltip'], 
diff --git a/lib/NGCP/Panel/Form/Customer/PbxExtensionSubscriber.pm b/lib/NGCP/Panel/Form/Customer/PbxExtensionSubscriber.pm
index d15a738f85..38b4dca7c3 100644
--- a/lib/NGCP/Panel/Form/Customer/PbxExtensionSubscriber.pm
+++ b/lib/NGCP/Panel/Form/Customer/PbxExtensionSubscriber.pm
@@ -1,6 +1,7 @@
 package NGCP::Panel::Form::Customer::PbxExtensionSubscriber;
 
 use HTML::FormHandler::Moose;
+use NGCP::Panel::Field::PosInteger;
 extends 'NGCP::Panel::Form::Customer::PbxSubscriber';
 
 has_field 'group' => (
@@ -10,7 +11,7 @@ has_field 'group' => (
 );
 
 has_field 'extension' => (
-    type => 'PosInteger',
+    type => '+NGCP::Panel::Field::PosInteger',
     element_attr => { 
         rel => ['tooltip'], 
         title => ['Extension Number, e.g. 101'] 
diff --git a/lib/NGCP/Panel/Form/Customer/PbxExtensionSubscriberEdit.pm b/lib/NGCP/Panel/Form/Customer/PbxExtensionSubscriberEdit.pm
index 1ed55d4214..f511be23d1 100644
--- a/lib/NGCP/Panel/Form/Customer/PbxExtensionSubscriberEdit.pm
+++ b/lib/NGCP/Panel/Form/Customer/PbxExtensionSubscriberEdit.pm
@@ -1,6 +1,7 @@
 package NGCP::Panel::Form::Customer::PbxExtensionSubscriberEdit;
 
 use HTML::FormHandler::Moose;
+use NGCP::Panel::Field::PosInteger;
 extends 'NGCP::Panel::Form::Customer::PbxSubscriber';
 
 has_field 'group' => (
@@ -10,7 +11,7 @@ has_field 'group' => (
 );
 
 has_field 'extension' => (
-    type => 'PosInteger',
+    type => '+NGCP::Panel::Field::PosInteger',
     element_attr => { 
         rel => ['tooltip'], 
         title => ['Extension Number, e.g. 101'] 
diff --git a/lib/NGCP/Panel/Form/Customer/PbxGroupBase.pm b/lib/NGCP/Panel/Form/Customer/PbxGroupBase.pm
index 22d7b5a68b..fd875622c9 100644
--- a/lib/NGCP/Panel/Form/Customer/PbxGroupBase.pm
+++ b/lib/NGCP/Panel/Form/Customer/PbxGroupBase.pm
@@ -5,6 +5,7 @@ extends 'HTML::FormHandler';
 use Moose::Util::TypeConstraints;
 
 use HTML::FormHandler::Widget::Block::Bootstrap;
+use NGCP::Panel::Field::PosInteger;
 
 has '+widget_wrapper' => ( default => 'Bootstrap' );
 has_field 'submitid' => ( type => 'Hidden' );
@@ -23,7 +24,7 @@ has_field 'hunt_policy' => (
 );
 
 has_field 'hunt_policy_timeout' => (
-    type => 'PosInteger',
+    type => '+NGCP::Panel::Field::PosInteger',
     required => 1,
     label => 'Serial Hunting Timeout',
     default => 10,
diff --git a/lib/NGCP/Panel/Form/Customer/Subscriber.pm b/lib/NGCP/Panel/Form/Customer/Subscriber.pm
index ed598f119c..09074fb587 100644
--- a/lib/NGCP/Panel/Form/Customer/Subscriber.pm
+++ b/lib/NGCP/Panel/Form/Customer/Subscriber.pm
@@ -7,6 +7,7 @@ use Moose::Util::TypeConstraints;
 use HTML::FormHandler::Widget::Block::Bootstrap;
 
 use NGCP::Panel::Field::Domain;
+use NGCP::Panel::Field::PosInteger;
 
 has '+widget_wrapper' => ( default => 'Bootstrap' );
 has_field 'submitid' => ( type => 'Hidden' );
@@ -43,7 +44,7 @@ has_field 'e164' => (
 );
 
 has_field 'e164.cc' => (
-    type => 'PosInteger',
+    type => '+NGCP::Panel::Field::PosInteger',
     element_attr => { 
         class => ['ngcp_e164_cc'], 
         rel => ['tooltip'], 
@@ -54,7 +55,7 @@ has_field 'e164.cc' => (
 );
 
 has_field 'e164.ac' => (
-    type => 'PosInteger',
+    type => '+NGCP::Panel::Field::PosInteger',
     element_attr => { 
         class => ['ngcp_e164_ac'], 
         rel => ['tooltip'], 
@@ -65,7 +66,7 @@ has_field 'e164.ac' => (
 );
 
 has_field 'e164.sn' => (
-    type => 'PosInteger',
+    type => '+NGCP::Panel::Field::PosInteger',
     element_attr => { 
         class => ['ngcp_e164_sn'], 
         rel => ['tooltip'], 
@@ -155,7 +156,18 @@ sub validate {
     my $cc = $self->field('e164.cc')->value;
     my $sn = $self->field('e164.sn')->value;
 
-    if (defined $cc && $cc ne '' && (!defined $sn || $sn eq '')) {
+    my %sub_errors = map {$_, 1} (
+        @{ $self->field('e164.cc')->errors },
+        @{ $self->field('e164.ac')->errors },
+        @{ $self->field('e164.sn')->errors } );
+    $self->field('e164')->push_errors(keys %sub_errors);
+    $self->field('e164.cc')->clear_errors;
+    $self->field('e164.ac')->clear_errors;
+    $self->field('e164.sn')->clear_errors;
+
+    if ($self->field('e164')->has_errors) {
+        #dont add more errors
+    } elsif (defined $cc && $cc ne '' && (!defined $sn || $sn eq '')) {
         my $err_msg = 'Subscriber Number required if Country Code is set';
         $self->field('e164')->add_error($err_msg);
     } elsif(defined $sn && $sn ne '' && (!defined $cc || $cc eq '')) {
diff --git a/lib/NGCP/Panel/Form/DestinationSet.pm b/lib/NGCP/Panel/Form/DestinationSet.pm
index ba8e6cd0e7..217b385b6c 100644
--- a/lib/NGCP/Panel/Form/DestinationSet.pm
+++ b/lib/NGCP/Panel/Form/DestinationSet.pm
@@ -2,6 +2,7 @@ package NGCP::Panel::Form::DestinationSet;
 use HTML::FormHandler::Moose;
 use HTML::FormHandler::Widget::Block::Bootstrap;
 use Moose::Util::TypeConstraints;
+use NGCP::Panel::Field::PosInteger;
 extends 'HTML::FormHandler';
 
 with 'NGCP::Panel::Render::RepeatableJs';
@@ -83,14 +84,14 @@ has_field 'destination.uri.destination' => (
     wrapper_class => [qw/hfh-rep-field/],
 );
 has_field 'destination.uri.timeout' => (
-    type => 'PosInteger',
+    type => '+NGCP::Panel::Field::PosInteger',
     label => 'for (seconds)',
     default => 300,
     wrapper_class => [qw/hfh-rep-field/],
 );
 
 has_field 'destination.priority' => (
-    type => 'PosInteger',
+    type => '+NGCP::Panel::Field::PosInteger',
     label => 'Priority',
     wrapper_class => [qw/hfh-rep-field/],
     default => 1,
diff --git a/lib/NGCP/Panel/Form/PeeringServer.pm b/lib/NGCP/Panel/Form/PeeringServer.pm
index bc9f33efe6..6c977bd0ce 100644
--- a/lib/NGCP/Panel/Form/PeeringServer.pm
+++ b/lib/NGCP/Panel/Form/PeeringServer.pm
@@ -3,6 +3,7 @@ use Sipwise::Base;
 use HTML::FormHandler::Moose;
 extends 'HTML::FormHandler';
 use Moose::Util::TypeConstraints;
+use NGCP::Panel::Field::PosInteger;
 
 use HTML::FormHandler::Widget::Block::Bootstrap;
 
@@ -28,7 +29,7 @@ has_field 'host' => (
 );
 
 has_field 'port' => (
-    type => 'PosInteger',
+    type => '+NGCP::Panel::Field::PosInteger',
     max_range => 65535,
     default => '5060',
     required => 1,
@@ -45,7 +46,7 @@ has_field 'transport' => (
 );
 
 has_field 'weight' => (
-    type => 'PosInteger',
+    type => '+NGCP::Panel::Field::PosInteger',
     required => 1,
     max_range => 25,
     default => 1,
diff --git a/lib/NGCP/Panel/Form/Subscriber.pm b/lib/NGCP/Panel/Form/Subscriber.pm
index 6fb398162f..ca7d27f0cd 100644
--- a/lib/NGCP/Panel/Form/Subscriber.pm
+++ b/lib/NGCP/Panel/Form/Subscriber.pm
@@ -8,7 +8,7 @@ use HTML::FormHandler::Widget::Block::Bootstrap;
 
 use NGCP::Panel::Field::Domain;
 use NGCP::Panel::Field::CustomerContract;
-use NGCP::Panel::Field::Reseller;
+use NGCP::Panel::Field::PosInteger;
 
 has '+widget_wrapper' => ( default => 'Bootstrap' );
 has_field 'submitid' => ( type => 'Hidden' );
@@ -52,7 +52,7 @@ has_field 'e164' => (
 );
 
 has_field 'e164.cc' => (
-    type => 'PosInteger',
+    type => '+NGCP::Panel::Field::PosInteger',
     element_attr => { 
         class => ['ngcp_e164_cc'], 
         rel => ['tooltip'], 
@@ -63,7 +63,7 @@ has_field 'e164.cc' => (
 );
 
 has_field 'e164.ac' => (
-    type => 'PosInteger',
+    type => '+NGCP::Panel::Field::PosInteger',
     element_attr => { 
         class => ['ngcp_e164_ac'], 
         rel => ['tooltip'], 
@@ -74,7 +74,7 @@ has_field 'e164.ac' => (
 );
 
 has_field 'e164.sn' => (
-    type => 'PosInteger',
+    type => '+NGCP::Panel::Field::PosInteger',
     element_attr => { 
         class => ['ngcp_e164_sn'], 
         rel => ['tooltip'], 
@@ -165,7 +165,18 @@ sub validate {
     my $cc = $self->field('e164.cc')->value;
     my $sn = $self->field('e164.sn')->value;
 
-    if (defined $cc && $cc ne '' && (!defined $sn || $sn eq '')) {
+    my %sub_errors = map {$_, 1} (
+        @{ $self->field('e164.cc')->errors },
+        @{ $self->field('e164.ac')->errors },
+        @{ $self->field('e164.sn')->errors } );
+    $self->field('e164')->push_errors(keys %sub_errors);
+    $self->field('e164.cc')->clear_errors;
+    $self->field('e164.ac')->clear_errors;
+    $self->field('e164.sn')->clear_errors;
+
+    if ($self->field('e164')->has_errors) {
+        #dont add more errors
+    } elsif (defined $cc && $cc ne '' && (!defined $sn || $sn eq '')) {
         my $err_msg = 'Subscriber Number required if Country Code is set';
         $self->field('e164')->add_error($err_msg);
     } elsif(defined $sn && $sn ne '' && (!defined $cc || $cc eq '')) {
diff --git a/lib/NGCP/Panel/Form/SubscriberCFSimple.pm b/lib/NGCP/Panel/Form/SubscriberCFSimple.pm
index 6d1731cc09..500c4052b2 100644
--- a/lib/NGCP/Panel/Form/SubscriberCFSimple.pm
+++ b/lib/NGCP/Panel/Form/SubscriberCFSimple.pm
@@ -2,6 +2,7 @@ package NGCP::Panel::Form::SubscriberCFSimple;
 use HTML::FormHandler::Moose;
 use HTML::FormHandler::Widget::Block::Bootstrap;
 use Moose::Util::TypeConstraints;
+use NGCP::Panel::Field::PosInteger;
 extends 'HTML::FormHandler';
 
 has '+widget_wrapper' => (default => 'Bootstrap');
@@ -67,7 +68,7 @@ has_field 'destination.uri.destination' => (
     label => 'URI/Number',
 );
 has_field 'destination.uri.timeout' => (
-    type => 'PosInteger',
+    type => '+NGCP::Panel::Field::PosInteger',
     label => 'for (seconds)',
     default => 300,
 );
diff --git a/lib/NGCP/Panel/Form/SubscriberCFTAdvanced.pm b/lib/NGCP/Panel/Form/SubscriberCFTAdvanced.pm
index 3db59f90ce..5a5b0132ad 100644
--- a/lib/NGCP/Panel/Form/SubscriberCFTAdvanced.pm
+++ b/lib/NGCP/Panel/Form/SubscriberCFTAdvanced.pm
@@ -2,10 +2,11 @@ package NGCP::Panel::Form::SubscriberCFTAdvanced;
 use HTML::FormHandler::Moose;
 use HTML::FormHandler::Widget::Block::Bootstrap;
 use Moose::Util::TypeConstraints;
+use NGCP::Panel::Field::PosInteger;
 extends 'NGCP::Panel::Form::SubscriberCFAdvanced';
 
 has_field 'ringtimeout' => (
-    type => 'PosInteger',
+    type => '+NGCP::Panel::Field::PosInteger',
     required => 1,
     label => 'after ring timeout',
     element_attr => {
diff --git a/lib/NGCP/Panel/Form/SubscriberCFTSimple.pm b/lib/NGCP/Panel/Form/SubscriberCFTSimple.pm
index 9cd291bac0..46cb5e1c69 100644
--- a/lib/NGCP/Panel/Form/SubscriberCFTSimple.pm
+++ b/lib/NGCP/Panel/Form/SubscriberCFTSimple.pm
@@ -2,10 +2,11 @@ package NGCP::Panel::Form::SubscriberCFTSimple;
 use HTML::FormHandler::Moose;
 use HTML::FormHandler::Widget::Block::Bootstrap;
 use Moose::Util::TypeConstraints;
+use NGCP::Panel::Field::PosInteger;
 extends 'NGCP::Panel::Form::SubscriberCFSimple';
 
 has_field 'ringtimeout' => (
-	type => 'PosInteger', 
+	type => '+NGCP::Panel::Field::PosInteger', 
 	required => 1,
 	label => 'after ring timeout',
     element_attr => {
diff --git a/lib/NGCP/Panel/Form/SubscriberEdit.pm b/lib/NGCP/Panel/Form/SubscriberEdit.pm
index afcd778330..6e28525e6e 100644
--- a/lib/NGCP/Panel/Form/SubscriberEdit.pm
+++ b/lib/NGCP/Panel/Form/SubscriberEdit.pm
@@ -9,6 +9,7 @@ use HTML::FormHandler::Widget::Block::Bootstrap;
 use NGCP::Panel::Field::Domain;
 use NGCP::Panel::Field::CustomerContract;
 use NGCP::Panel::Field::Reseller;
+use NGCP::Panel::Field::PosInteger;
 
 with 'NGCP::Panel::Render::RepeatableJs';
 
@@ -54,7 +55,7 @@ has_field 'e164' => (
 );
 
 has_field 'e164.cc' => (
-    type => 'PosInteger',
+    type => '+NGCP::Panel::Field::PosInteger',
     element_attr => { 
         class => ['ngcp_e164_cc'], 
         rel => ['tooltip'], 
@@ -65,7 +66,7 @@ has_field 'e164.cc' => (
 );
 
 has_field 'e164.ac' => (
-    type => 'PosInteger',
+    type => '+NGCP::Panel::Field::PosInteger',
     element_attr => { 
         class => ['ngcp_e164_ac'], 
         rel => ['tooltip'], 
@@ -76,7 +77,7 @@ has_field 'e164.ac' => (
 );
 
 has_field 'e164.sn' => (
-    type => 'PosInteger',
+    type => '+NGCP::Panel::Field::PosInteger',
     element_attr => { 
         class => ['ngcp_e164_sn'], 
         rel => ['tooltip'], 
@@ -112,7 +113,7 @@ has_field 'alias_number.e164' => (
 );
 
 has_field 'alias_number.e164.cc' => (
-    type => 'PosInteger',
+    type => '+NGCP::Panel::Field::PosInteger',
     element_attr => { 
         class => ['ngcp_e164_cc'], 
         rel => ['tooltip'], 
@@ -123,7 +124,7 @@ has_field 'alias_number.e164.cc' => (
 );
 
 has_field 'alias_number.e164.ac' => (
-    type => 'PosInteger',
+    type => '+NGCP::Panel::Field::PosInteger',
     element_attr => { 
         class => ['ngcp_e164_ac'], 
         rel => ['tooltip'], 
@@ -134,7 +135,7 @@ has_field 'alias_number.e164.ac' => (
 );
 
 has_field 'alias_number.e164.sn' => (
-    type => 'PosInteger',
+    type => '+NGCP::Panel::Field::PosInteger',
     element_attr => { 
         class => ['ngcp_e164_sn'], 
         rel => ['tooltip'],