diff --git a/htdocs/webservices/demo_wsclient_invoice.php b/htdocs/webservices/demo_wsclient_invoice.php
index dce3e472271..8c12040a6dd 100755
--- a/htdocs/webservices/demo_wsclient_invoice.php
+++ b/htdocs/webservices/demo_wsclient_invoice.php
@@ -29,8 +29,10 @@ require_once("../master.inc.php");
 require_once(NUSOAP_PATH.'/nusoap.php');		// Include SOAP
 
 $WS_DOL_URL = DOL_MAIN_URL_ROOT.'/webservices/server_invoice.php';
+//$WS_DOL_URL = 'http://localhost:8080/';	// If not a page, should end with /
 $WS_METHOD1  = 'getInvoice';
 $WS_METHOD2  = 'getInvoicesForThirdParty';
+$ns='http://www.dolibarr.org/ns/';
 
 
 // Set the WebService URL
@@ -39,11 +41,13 @@ $soapclient1 = new nusoap_client($WS_DOL_URL);
 if ($soapclient1)
 {
 	$soapclient1->soap_defencoding='UTF-8';
+	$soapclient1->decodeUTF8(false);
 }
 $soapclient2 = new nusoap_client($WS_DOL_URL);
 if ($soapclient2)
 {
     $soapclient2->soap_defencoding='UTF-8';
+	$soapclient2->decodeUTF8(false);
 }
 
 // Call the WebService method and store its result in $result.
@@ -56,20 +60,28 @@ $authentication=array(
 
 $parameters = array('authentication'=>$authentication,'id'=>1,'ref'=>'');
 dol_syslog("Call method ".$WS_METHOD1);
-$result1 = $soapclient1->call($WS_METHOD1,$parameters);
+$result1 = $soapclient1->call($WS_METHOD1,$parameters,$ns,'');
 if (! $result1)
 {
 	print $soapclient1->error_str;
+	print "<br>\n\n";
+	print $soapclient1->request;
+	print "<br>\n\n";
+	print $soapclient1->response;
 	exit;
 }
 
 $parameters = array('authentication'=>$authentication,'idthirdparty'=>'1');
 dol_syslog("Call method ".$WS_METHOD2);
-$result2 = $soapclient2->call($WS_METHOD2,$parameters);
+$result2 = $soapclient2->call($WS_METHOD2,$parameters,$ns,'');
 if (! $result2)
 {
-    print $soapclient2->error_str;
-    exit;
+	print $soapclient2->error_str;
+	print "<br>\n\n";
+	print $soapclient2->request;
+	print "<br>\n\n";
+	print $soapclient2->response;
+	exit;
 }
 
 
diff --git a/htdocs/webservices/demo_wsclient_other.php b/htdocs/webservices/demo_wsclient_other.php
index d51ae578805..28f60558729 100755
--- a/htdocs/webservices/demo_wsclient_other.php
+++ b/htdocs/webservices/demo_wsclient_other.php
@@ -29,7 +29,9 @@ require_once("../master.inc.php");
 require_once(NUSOAP_PATH.'/nusoap.php');		// Include SOAP
 
 $WS_DOL_URL = DOL_MAIN_URL_ROOT.'/webservices/server_other.php';
+//$WS_DOL_URL = 'http://localhost:8080/';	// If not a page, should end with /
 $WS_METHOD  = 'getVersions';
+$ns='http://www.dolibarr.org/ns/';
 
 
 // Set the WebService URL
@@ -38,6 +40,7 @@ $soapclient = new nusoap_client($WS_DOL_URL);
 if ($soapclient)
 {
 	$soapclient->soap_defencoding='UTF-8';
+	$soapclient->decodeUTF8(false);
 }
 
 // Call the WebService method and store its result in $result.
@@ -49,10 +52,16 @@ $authentication=array(
     'entity'=>'');
 $parameters = array('authentication'=>$authentication);
 dol_syslog("Call method ".$WS_METHOD);
-$result = $soapclient->call($WS_METHOD,$parameters);
+$result = $soapclient->call($WS_METHOD,$parameters,$ns,'');
 if (! $result)
 {
+	//var_dump($soapclient);
+	//print_r($soapclient);
 	print $soapclient->error_str;
+	print "<br>\n\n";
+	print $soapclient->request;
+	print "<br>\n\n";
+	print $soapclient->response;
 	exit;
 }
 
diff --git a/htdocs/webservices/demo_wsclient_thirdparty.php b/htdocs/webservices/demo_wsclient_thirdparty.php
index 302dfd0dc1e..41358055420 100755
--- a/htdocs/webservices/demo_wsclient_thirdparty.php
+++ b/htdocs/webservices/demo_wsclient_thirdparty.php
@@ -29,7 +29,9 @@ require_once("../master.inc.php");
 require_once(NUSOAP_PATH.'/nusoap.php');		// Include SOAP
 
 $WS_DOL_URL = DOL_MAIN_URL_ROOT.'/webservices/server_thirdparty.php';
+//$WS_DOL_URL = 'http://localhost:8080/';	// If not a page, should end with /
 $WS_METHOD  = 'getThirdParty';
+$ns='http://www.dolibarr.org/ns/';
 
 
 // Set the WebService URL
@@ -38,6 +40,7 @@ $soapclient = new nusoap_client($WS_DOL_URL);
 if ($soapclient)
 {
 	$soapclient->soap_defencoding='UTF-8';
+	$soapclient->decodeUTF8(false);
 }
 
 // Call the WebService method and store its result in $result.
@@ -47,12 +50,16 @@ $authentication=array(
     'login'=>'admin',
     'password'=>'changeme',
     'entity'=>'');
-$parameters = array('authentication'=>$authentication,'id'=>0,'name'=>'aaa');
+$parameters = array('authentication'=>$authentication,'id'=>0,'name'=>'aaa','ref_ext'=>'');
 dol_syslog("Call method ".$WS_METHOD);
-$result = $soapclient->call($WS_METHOD,$parameters);
+$result = $soapclient->call($WS_METHOD,$parameters,$ns,'');
 if (! $result)
 {
 	print $soapclient->error_str;
+	print "<br>\n\n";
+	print $soapclient->request;
+	print "<br>\n\n";
+	print $soapclient->response;
 	exit;
 }
 
diff --git a/htdocs/webservices/server_invoice.php b/htdocs/webservices/server_invoice.php
index 224ef7203f1..0bc7e988720 100755
--- a/htdocs/webservices/server_invoice.php
+++ b/htdocs/webservices/server_invoice.php
@@ -46,6 +46,7 @@ if (empty($conf->global->MAIN_MODULE_WEBSERVICES))
 // Create the soap Object
 $server = new nusoap_server();
 $server->soap_defencoding='UTF-8';
+$server->decode_utf8=false;
 $ns='http://www.dolibarr.org/ns/';
 $server->configureWSDL('WebServicesDolibarrInvoice',$ns);
 $server->wsdl->schemaTargetNamespace=$ns;
@@ -191,7 +192,7 @@ $ns
 /**
  * Get invoice from id, ref or ref_ext
  */
-function getInvoice($authentication,$id,$ref,$ref_ext)
+function getInvoice($authentication,$id='',$ref='',$ref_ext='')
 {
 	global $db,$conf,$langs;
 
diff --git a/htdocs/webservices/server_other.php b/htdocs/webservices/server_other.php
index 1f6b9635e24..da37bdd30ac 100644
--- a/htdocs/webservices/server_other.php
+++ b/htdocs/webservices/server_other.php
@@ -46,6 +46,7 @@ if (empty($conf->global->MAIN_MODULE_WEBSERVICES))
 // Create the soap Object
 $server = new nusoap_server();
 $server->soap_defencoding='UTF-8';
+$server->decode_utf8=false;
 $ns='http://www.dolibarr.org/ns/';
 $server->configureWSDL('WebServicesDolibarrOther',$ns);
 $server->wsdl->schemaTargetNamespace=$ns;
diff --git a/htdocs/webservices/server_supplier_invoice.php b/htdocs/webservices/server_supplier_invoice.php
index 993a40e6c28..a843aee3c56 100755
--- a/htdocs/webservices/server_supplier_invoice.php
+++ b/htdocs/webservices/server_supplier_invoice.php
@@ -46,6 +46,7 @@ if (empty($conf->global->MAIN_MODULE_WEBSERVICES))
 // Create the soap Object
 $server = new nusoap_server();
 $server->soap_defencoding='UTF-8';
+$server->decode_utf8=false;
 $ns='http://www.dolibarr.org/ns/';
 $server->configureWSDL('WebServicesDolibarrSupplierInvoice',$ns);
 $server->wsdl->schemaTargetNamespace=$ns;
@@ -193,7 +194,7 @@ $ns
 /**
  * Get invoice from id, ref or ref_ext
  */
-function getSupplierInvoice($authentication,$id,$ref,$ref_ext)
+function getSupplierInvoice($authentication,$id='',$ref='',$ref_ext='')
 {
 	global $db,$conf,$langs;
 
diff --git a/htdocs/webservices/server_thirdparty.php b/htdocs/webservices/server_thirdparty.php
index 65c15d04897..496f18ebc9a 100755
--- a/htdocs/webservices/server_thirdparty.php
+++ b/htdocs/webservices/server_thirdparty.php
@@ -46,6 +46,7 @@ if (empty($conf->global->MAIN_MODULE_WEBSERVICES))
 // Create the soap Object
 $server = new nusoap_server();
 $server->soap_defencoding='UTF-8';
+$server->decode_utf8=false;
 $ns='http://www.dolibarr.org/ns/';
 $server->configureWSDL('WebServicesDolibarrThirdParty',$ns);
 $server->wsdl->schemaTargetNamespace=$ns;
@@ -125,7 +126,7 @@ $ns
 
 
 // Full methods code
-function getThirdParty($authentication,$id,$ref,$ref_ext)
+function getThirdParty($authentication,$id='',$ref='',$ref_ext='')
 {
 	global $db,$conf,$langs;