diff --git a/htdocs/comm/askpricesupplier/class/askpricesupplier.class.php b/htdocs/comm/askpricesupplier/class/askpricesupplier.class.php
index bee62cb384d..957ea33f60c 100644
--- a/htdocs/comm/askpricesupplier/class/askpricesupplier.class.php
+++ b/htdocs/comm/askpricesupplier/class/askpricesupplier.class.php
@@ -1289,12 +1289,12 @@ class AskPriceSupplier extends CommonObject
             $soc->fetch($this->socid);
 
             // Define new ref
-            if (! $error && (preg_match('/^[\(]?PROV/i', $this->ref)))
+            if (! $error && (preg_match('/^[\(]?PROV/i', $this->ref) || empty($this->ref))) // empty should not happened, but when it occurs, the test save life
             {
             	$num = $this->getNextNumRef($soc);
             }
             else
-          {
+            {
             	$num = $this->ref;
             }
             $this->newref = $num;
diff --git a/htdocs/comm/propal/class/propal.class.php b/htdocs/comm/propal/class/propal.class.php
index 421b2506e73..bfbc45b613d 100644
--- a/htdocs/comm/propal/class/propal.class.php
+++ b/htdocs/comm/propal/class/propal.class.php
@@ -1481,12 +1481,12 @@ class Propal extends CommonObject
             $soc->fetch($this->socid);
 
             // Define new ref
-            if (! $error && (preg_match('/^[\(]?PROV/i', $this->ref)))
+            if (! $error && (preg_match('/^[\(]?PROV/i', $this->ref) || empty($this->ref))) // empty should not happened, but when it occurs, the test save life
             {
             	$num = $this->getNextNumRef($soc);
             }
             else
-          {
+            {
             	$num = $this->ref;
             }
             $this->newref = $num;
diff --git a/htdocs/commande/card.php b/htdocs/commande/card.php
index 94d5c91c94f..db8b94d769a 100644
--- a/htdocs/commande/card.php
+++ b/htdocs/commande/card.php
@@ -1,6 +1,6 @@
 <?php
 /* Copyright (C) 2003-2006	Rodolphe Quiedeville	<rodolphe@quiedeville.org>
- * Copyright (C) 2004-2014	Laurent Destailleur		<eldy@users.sourceforge.net>
+ * Copyright (C) 2004-2015	Laurent Destailleur		<eldy@users.sourceforge.net>
  * Copyright (C) 2005		Marc Barilley / Ocebo	<marc@ocebo.com>
  * Copyright (C) 2005-2015	Regis Houssin			<regis.houssin@capnetworks.com>
  * Copyright (C) 2006		Andre Cianfarani		<acianfa@free.fr>
@@ -165,7 +165,7 @@ if (empty($reshook))
 		}
 	}
 
-	// Suppression de la commande
+	// Remove order
 	else if ($action == 'confirm_delete' && $confirm == 'yes' && $user->rights->commande->supprimer)
 	{
 		$result = $object->delete($user);
diff --git a/htdocs/commande/class/commande.class.php b/htdocs/commande/class/commande.class.php
index 767bf294d6f..e681bfc7726 100644
--- a/htdocs/commande/class/commande.class.php
+++ b/htdocs/commande/class/commande.class.php
@@ -263,14 +263,14 @@ class Commande extends CommonOrder
         // Protection
         if ($this->statut == self::STATUS_VALIDATED)
         {
-            dol_syslog(get_class($this)."::valid no draft status", LOG_WARNING);
+            dol_syslog(get_class($this)."::valid action abandonned: no draft status", LOG_WARNING);
             return 0;
         }
 
         if (! ((empty($conf->global->MAIN_USE_ADVANCED_PERMS) && ! empty($user->rights->commande->creer))
        	|| (! empty($conf->global->MAIN_USE_ADVANCED_PERMS) && ! empty($user->rights->commande->order_advance->validate))))
         {
-            $this->error='Permission denied';
+            $this->error='ErrorPermissionDenied';
             dol_syslog(get_class($this)."::valid ".$this->error, LOG_ERR);
             return -1;
         }
@@ -287,7 +287,7 @@ class Commande extends CommonOrder
         $result=$soc->set_as_client();
 
         // Define new ref
-        if (! $error && (preg_match('/^[\(]?PROV/i', $this->ref)))
+        if (! $error && (preg_match('/^[\(]?PROV/i', $this->ref) || empty($this->ref))) // empty should not happened, but when it occurs, the test save life
         {
             $num = $this->getNextNumRef($soc);
         }
diff --git a/htdocs/compta/facture/class/facture.class.php b/htdocs/compta/facture/class/facture.class.php
index f0668bb0987..80ca5e1f139 100644
--- a/htdocs/compta/facture/class/facture.class.php
+++ b/htdocs/compta/facture/class/facture.class.php
@@ -1827,7 +1827,7 @@ class Facture extends CommonInvoice
 		{
 			$num = $force_number;
 		}
-		else if (preg_match('/^[\(]?PROV/i', $this->ref))
+		else if (preg_match('/^[\(]?PROV/i', $this->ref) || empty($this->ref)) // empty should not happened, but when it occurs, the test save life
 		{
 			if (! empty($conf->global->FAC_FORCE_DATE_VALIDATION))	// If option enabled, we force invoice date
 			{
diff --git a/htdocs/contrat/class/contrat.class.php b/htdocs/contrat/class/contrat.class.php
index eea23be7ae8..e88f4c95d54 100644
--- a/htdocs/contrat/class/contrat.class.php
+++ b/htdocs/contrat/class/contrat.class.php
@@ -402,7 +402,7 @@ class Contrat extends CommonObject
 		$result=$this->thirdparty->set_as_client();
 
 		// Define new ref
-		if (! $error && (preg_match('/^[\(]?PROV/i', $this->ref)))
+		if (! $error && (preg_match('/^[\(]?PROV/i', $this->ref) || empty($this->ref))) // empty should not happened, but when it occurs, the test save life
 		{
 			$num = $this->getNextNumRef($this->thirdparty);
 		}
diff --git a/htdocs/expedition/class/expedition.class.php b/htdocs/expedition/class/expedition.class.php
index edd8aa0cd39..b43afdfc206 100644
--- a/htdocs/expedition/class/expedition.class.php
+++ b/htdocs/expedition/class/expedition.class.php
@@ -589,7 +589,7 @@ class Expedition extends CommonObject
 		$result=$soc->set_as_client();
 
 		// Define new ref
-		if (! $error && (preg_match('/^[\(]?PROV/i', $this->ref)))
+		if (! $error && (preg_match('/^[\(]?PROV/i', $this->ref) || empty($this->ref))) // empty should not happened, but when it occurs, the test save life
 		{
 			$numref = $this->getNextNumRef($soc);
 		}
diff --git a/htdocs/fichinter/class/fichinter.class.php b/htdocs/fichinter/class/fichinter.class.php
index d0bcee286d0..fe93bc42143 100644
--- a/htdocs/fichinter/class/fichinter.class.php
+++ b/htdocs/fichinter/class/fichinter.class.php
@@ -400,7 +400,7 @@ class Fichinter extends CommonObject
 			$now=dol_now();
 
 			// Define new ref
-			if (! $error && (preg_match('/^[\(]?PROV/i', $this->ref)))
+			if (! $error && (preg_match('/^[\(]?PROV/i', $this->ref) || empty($this->ref))) // empty should not happened, but when it occurs, the test save life
 			{
 				$num = $this->getNextNumRef($this->thirdparty);
 			}
diff --git a/htdocs/fourn/class/fournisseur.commande.class.php b/htdocs/fourn/class/fournisseur.commande.class.php
index 9d77deff3ee..54022429fb3 100644
--- a/htdocs/fourn/class/fournisseur.commande.class.php
+++ b/htdocs/fourn/class/fournisseur.commande.class.php
@@ -388,7 +388,7 @@ class CommandeFournisseur extends CommonOrder
             $soc->fetch($this->fourn_id);
 
             // Check if object has a temporary ref
-            if (preg_match('/^[\(]?PROV/i', $this->ref))
+            if (preg_match('/^[\(]?PROV/i', $this->ref) || empty($this->ref)) // empty should not happened, but when it occurs, the test save life
             {
                 $num = $this->getNextNumRef($soc);
             }
@@ -684,7 +684,7 @@ class CommandeFournisseur extends CommonOrder
             $soc->fetch($this->fourn_id);
 
             // Check if object has a temporary ref
-            if (preg_match('/^[\(]?PROV/i', $this->ref))
+            if (preg_match('/^[\(]?PROV/i', $this->ref) || empty($this->ref)) // empty should not happened, but when it occurs, the test save life
             {
                 $num = $this->getNextNumRef($soc);
             }
diff --git a/htdocs/fourn/class/fournisseur.facture.class.php b/htdocs/fourn/class/fournisseur.facture.class.php
index 6a209174d9f..890772326ea 100644
--- a/htdocs/fourn/class/fournisseur.facture.class.php
+++ b/htdocs/fourn/class/fournisseur.facture.class.php
@@ -925,7 +925,7 @@ class FactureFournisseur extends CommonInvoice
         {
             $num = $force_number;
         }
-        else if (preg_match('/^[\(]?PROV/i', $this->ref))
+        else if (preg_match('/^[\(]?PROV/i', $this->ref) || empty($this->ref)) // empty should not happened, but when it occurs, the test save life
         {
             $num = $this->getNextNumRef($this->client);
         }
diff --git a/htdocs/fourn/commande/card.php b/htdocs/fourn/commande/card.php
index fccd2652ed3..50bcefc36b2 100644
--- a/htdocs/fourn/commande/card.php
+++ b/htdocs/fourn/commande/card.php
@@ -1672,7 +1672,10 @@ elseif (! empty($object->id))
 		$object->date_commande=dol_now();
 
 		// We check if number is temporary number
-		if (preg_match('/^[\(]?PROV/i',$object->ref)) $newref = $object->getNextNumRef($object->thirdparty);
+		if (preg_match('/^[\(]?PROV/i',$object->ref) || empty($object->ref)) // empty should not happened, but when it occurs, the test save life 
+		{
+		    $newref = $object->getNextNumRef($object->thirdparty);
+		}
 		else $newref = $object->ref;
 
 		if ($newref < 0)
diff --git a/htdocs/livraison/class/livraison.class.php b/htdocs/livraison/class/livraison.class.php
index 3a1704f8d8d..175d20a3952 100644
--- a/htdocs/livraison/class/livraison.class.php
+++ b/htdocs/livraison/class/livraison.class.php
@@ -379,7 +379,7 @@ class Livraison extends CommonObject
 					$soc = new Societe($this->db);
 					$soc->fetch($this->socid);
 
-					if (preg_match('/^[\(]?PROV/i', $this->ref))
+					if (preg_match('/^[\(]?PROV/i', $this->ref) || empty($this->ref)) // empty should not happened, but when it occurs, the test save life
 		            {
 		                $numref = $objMod->livraison_get_num($soc,$this);
 		            }