diff --git a/htdocs/webservices/demo_wsclient_invoice.php b/htdocs/webservices/demo_wsclient_invoice.php
index f740e3709f7..60d882b26ba 100755
--- a/htdocs/webservices/demo_wsclient_invoice.php
+++ b/htdocs/webservices/demo_wsclient_invoice.php
@@ -31,6 +31,7 @@ require_once(NUSOAP_PATH.'/nusoap.php');		// Include SOAP
 $WS_DOL_URL = $dolibarr_main_url_root.'/webservices/server_invoice.php';
 $WS_METHOD1  = 'getInvoice';
 $WS_METHOD2  = 'getInvoicesForThirdParty';
+$ns='http://www.dolibarr.org/ns/';
 
 
 // Set the WebService URL
@@ -39,11 +40,13 @@ $soapclient1 = new nusoap_client($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.
@@ -56,7 +59,7 @@ $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;
@@ -65,7 +68,7 @@ if (! $result1)
 
 $parameters = array('authentication'=>$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;
diff --git a/htdocs/webservices/demo_wsclient_other.php b/htdocs/webservices/demo_wsclient_other.php
index 0c08265eb62..32029f6caa1 100755
--- a/htdocs/webservices/demo_wsclient_other.php
+++ b/htdocs/webservices/demo_wsclient_other.php
@@ -30,6 +30,7 @@ require_once(NUSOAP_PATH.'/nusoap.php');		// Include SOAP
 
 $WS_DOL_URL = $dolibarr_main_url_root.'/webservices/server_other.php';
 $WS_METHOD  = 'getVersions';
+$ns='http://www.dolibarr.org/ns/';
 
 
 // Set the WebService URL
@@ -38,6 +39,7 @@ $soapclient = new nusoap_client($WS_DOL_URL);
 if ($soapclient)
 {
 	$soapclient->soap_defencoding='UTF-8';
+	$soapclient->decodeUTF8(false);
 }
 
 // Call the WebService method and store its result in $result.
@@ -49,7 +51,7 @@ $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)
 {
 	print $soapclient->error_str;
diff --git a/htdocs/webservices/demo_wsclient_thirdparty.php b/htdocs/webservices/demo_wsclient_thirdparty.php
index b3a9cf9c70c..969e25f5f48 100755
--- a/htdocs/webservices/demo_wsclient_thirdparty.php
+++ b/htdocs/webservices/demo_wsclient_thirdparty.php
@@ -30,6 +30,7 @@ require_once(NUSOAP_PATH.'/nusoap.php');		// Include SOAP
 
 $WS_DOL_URL = $dolibarr_main_url_root.'/webservices/server_thirdparty.php';
 $WS_METHOD  = 'getThirdParty';
+$ns='http://www.dolibarr.org/ns/';
 
 
 // Set the WebService URL
@@ -38,6 +39,7 @@ $soapclient = new nusoap_client($WS_DOL_URL);
 if ($soapclient)
 {
 	$soapclient->soap_defencoding='UTF-8';
+	$soapclient->decodeUTF8(false);
 }
 
 // Call the WebService method and store its result in $result.
@@ -49,7 +51,7 @@ $authentication=array(
     'entity'=>'');
 $parameters = array('authentication'=>$authentication,'id'=>0,'name'=>'aaa');
 dol_syslog("Call method ".$WS_METHOD);
-$result = $soapclient->call($WS_METHOD,$parameters);
+$result = $soapclient->call($WS_METHOD,$parameters,$ns,'');
 if (! $result)
 {
 	print $soapclient->error_str;
diff --git a/htdocs/webservices/server_invoice.php b/htdocs/webservices/server_invoice.php
index b5db639015c..ff82b33d4db 100755
--- a/htdocs/webservices/server_invoice.php
+++ b/htdocs/webservices/server_invoice.php
@@ -46,6 +46,7 @@ if (empty($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;
@@ -212,11 +213,6 @@ function getInvoice($authentication,$id,$ref,$ref_ext)
 		$error++;
 		$errorcode='BAD_VALUE_FOR_SECURITY_KEY'; $errorlabel='Value provided into dolibarrkey entry field does not match security key defined in Webservice module setup';
 	}
-    if (! $error && ! empty($authentication['entity']) && ! is_numeric($authentication['entity']))
-    {
-        $error++;
-        $errorcode='BAD_PARAMETERS'; $errorlabel="Parameter entity must be empty (or a numeric with id of instance if multicompany module is used).";
-    }
 
 	if (! $error && (($id && $ref) || ($id && $ref_ext) || ($ref && $ref_ext)))
 	{
diff --git a/htdocs/webservices/server_other.php b/htdocs/webservices/server_other.php
index 1f6b9635e24..ba478f1bc6f 100644
--- a/htdocs/webservices/server_other.php
+++ b/htdocs/webservices/server_other.php
@@ -46,6 +46,7 @@ if (empty($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;
@@ -111,11 +112,6 @@ function getVersions($authentication)
 		$error++;
 		$errorcode='BAD_VALUE_FOR_SECURITY_KEY'; $errorlabel='Value provided into dolibarrkey entry field does not match security key defined in Webservice module setup';
 	}
-    if (! $error && ! empty($authentication['entity']) && ! is_numeric($authentication['entity']))
-    {
-        $error++;
-        $errorcode='BAD_PARAMETERS'; $errorlabel="Parameter entity must be empty (or a numeric with id of instance if multicompany module is used).";
-    }
 
 	if (! $error)
 	{
diff --git a/htdocs/webservices/server_thirdparty.php b/htdocs/webservices/server_thirdparty.php
index 65c15d04897..996b84a6542 100755
--- a/htdocs/webservices/server_thirdparty.php
+++ b/htdocs/webservices/server_thirdparty.php
@@ -46,6 +46,7 @@ if (empty($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;
@@ -153,11 +154,6 @@ function getThirdParty($authentication,$id,$ref,$ref_ext)
 		$error++;
 		$errorcode='BAD_PARAMETERS'; $errorlabel="Parameter id, ref and ref_ext can't be both provided. You must choose one or other but not both.";
 	}
-    if (! $error && ! empty($authentication['entity']) && ! is_numeric($authentication['entity']))
-    {
-        $error++;
-        $errorcode='BAD_PARAMETERS'; $errorlabel="Parameter entity must be empty (or a numeric with id of instance if multicompany module is used).";
-    }
 
 	if (! $error)
 	{