diff --git a/htdocs/commande/class/commande.class.php b/htdocs/commande/class/commande.class.php
index e554990892c..268459a3c12 100644
--- a/htdocs/commande/class/commande.class.php
+++ b/htdocs/commande/class/commande.class.php
@@ -239,7 +239,8 @@ class Commande extends CommonOrder
             }
             else
 			{
-            	dol_print_error($this->db,get_class($this)."::getNextNumRef ".$obj->error);
+				$this->error=$obj->error;
+            	//dol_print_error($this->db,get_class($this)."::getNextNumRef ".$obj->error);
             	return "";
             }
         }
diff --git a/htdocs/compta/facture/class/facture.class.php b/htdocs/compta/facture/class/facture.class.php
index 36046fa8010..ba834856fab 100644
--- a/htdocs/compta/facture/class/facture.class.php
+++ b/htdocs/compta/facture/class/facture.class.php
@@ -3016,7 +3016,8 @@ class Facture extends CommonInvoice
 			 * set up mask.
 			 */
 			if ($mode != 'last' && !$numref) {
-				dol_print_error($this->db,"Facture::getNextNumRef ".$obj->error);
+				$this->error=$obj->error;
+				//dol_print_error($this->db,"Facture::getNextNumRef ".$obj->error);
 				return "";
 			}
 
diff --git a/htdocs/fourn/class/fournisseur.facture.class.php b/htdocs/fourn/class/fournisseur.facture.class.php
index bc7f5bfdca6..27b7627f450 100644
--- a/htdocs/fourn/class/fournisseur.facture.class.php
+++ b/htdocs/fourn/class/fournisseur.facture.class.php
@@ -1627,6 +1627,7 @@ class FactureFournisseur extends CommonInvoice
         }
         else
        {
+       		$this->error=$obj->error;
         	//dol_print_error($db,get_class($this)."::getNextNumRef ".$obj->error);
         	return false;
         }
diff --git a/htdocs/fourn/commande/list.php b/htdocs/fourn/commande/list.php
index c8d333f578d..33b9c81fd0c 100644
--- a/htdocs/fourn/commande/list.php
+++ b/htdocs/fourn/commande/list.php
@@ -77,6 +77,7 @@ $search_total_vat=GETPOST('search_total_vat','alpha');
 $search_total_ttc=GETPOST('search_total_ttc','alpha');
 $optioncss = GETPOST('optioncss','alpha');
 $billed = GETPOST('billed','int');
+$search_project_ref=GETPOST('search_project_ref','alpha');
 
 $page  = GETPOST('page','int');
 $sortorder = GETPOST('sortorder','alpha');
@@ -204,6 +205,7 @@ if (GETPOST("button_removefilter_x") || GETPOST("button_removefilter.x") || GETP
     $deliverymonth='';
     $deliveryyear='';
     $billed='';
+	$search_project_ref='';
     $search_array_options=array();
 
 }
@@ -350,6 +352,7 @@ if ($search_user > 0) $sql.= " AND ec.fk_c_type_contact = tc.rowid AND tc.elemen
 if ($search_total_ht != '') $sql.= natural_search('cf.total_ht', $search_total_ht, 1);
 if ($search_total_vat != '') $sql.= natural_search('cf.tva', $search_total_vat, 1);
 if ($search_total_ttc != '') $sql.= natural_search('cf.total_ttc', $search_total_ttc, 1);
+if ($search_project_ref != '') $sql.= natural_search("p.ref",$search_project_ref);
 
 // Add where from extra fields
 foreach ($search_array_options as $key => $val)