diff --git a/htdocs/commande/class/commande.class.php b/htdocs/commande/class/commande.class.php
index fd0f3faa95a..3e6deac6814 100644
--- a/htdocs/commande/class/commande.class.php
+++ b/htdocs/commande/class/commande.class.php
@@ -64,6 +64,8 @@ class Commande extends CommonObject
 	var $mode_reglement_code;
 	var $availability_id;
 	var $availability_code;
+	var $demand_reason_id;
+	var $demand_reason_code;
 	var $fk_delivery_address;
 	var $adresse;
 	var $date;				// Date commande
@@ -567,7 +569,7 @@ class Commande extends CommonObject
 
 		$sql = "INSERT INTO ".MAIN_DB_PREFIX."commande (";
 		$sql.= " ref, fk_soc, date_creation, fk_user_author, fk_projet, date_commande, source, note, note_public, ref_client";
-		$sql.= ", model_pdf, fk_cond_reglement, fk_mode_reglement, fk_availability, date_livraison, fk_adresse_livraison";
+		$sql.= ", model_pdf, fk_cond_reglement, fk_mode_reglement, fk_availability, fk_demand_reason, date_livraison, fk_adresse_livraison";
 		$sql.= ", remise_absolue, remise_percent";
 		$sql.= ", entity";
 		$sql.= ")";
@@ -580,6 +582,7 @@ class Commande extends CommonObject
 		$sql.= ", ".($this->cond_reglement_id>0?"'".$this->cond_reglement_id."'":"null");
 		$sql.= ", ".($this->mode_reglement_id>0?"'".$this->mode_reglement_id."'":"null");
 		$sql.= ", ".($this->availability_id>0?"'".$this->availability_id."'":"null");
+		$sql.= ", ".($this->demand_reason_id>0?"'".$this->demand_reason_id."'":"null");
 		$sql.= ", ".($this->date_livraison?"'".$this->db->idate($this->date_livraison)."'":"null");
 		$sql.= ", ".($this->fk_delivery_address>0?$this->fk_delivery_address:'NULL');
 		$sql.= ", ".($this->remise_absolue>0?$this->remise_absolue:'NULL');
@@ -854,6 +857,7 @@ class Commande extends CommonObject
             $this->cond_reglement_id    = $object->cond_reglement_id;
             $this->mode_reglement_id    = $object->mode_reglement_id;
             $this->availability_id      = $object->availability_id;
+			$this->demand_reason_id      = $object->demand_reason_id;
             $this->date_livraison       = $object->date_livraison;
             $this->fk_delivery_address  = $object->fk_delivery_address;
             $this->contact_id           = $object->contactid;
@@ -1142,7 +1146,7 @@ class Commande extends CommonObject
 		if (empty($id) && empty($ref)) return -1;
 
 		$sql = 'SELECT c.rowid, c.date_creation, c.ref, c.fk_soc, c.fk_user_author, c.fk_statut';
-		$sql.= ', c.amount_ht, c.total_ht, c.total_ttc, c.tva as total_tva, c.localtax1 as total_localtax1, c.localtax2 as total_localtax2, c.fk_cond_reglement, c.fk_mode_reglement, c.fk_availability';
+		$sql.= ', c.amount_ht, c.total_ht, c.total_ttc, c.tva as total_tva, c.localtax1 as total_localtax1, c.localtax2 as total_localtax2, c.fk_cond_reglement, c.fk_mode_reglement, c.fk_availability, c.fk_demand_reason';
 		$sql.= ', c.date_commande';
 		$sql.= ', c.date_livraison';
 		$sql.= ', c.fk_projet, c.remise_percent, c.remise, c.remise_absolue, c.source, c.facture as facturee';
@@ -1150,11 +1154,13 @@ class Commande extends CommonObject
 		$sql.= ', p.code as mode_reglement_code, p.libelle as mode_reglement_libelle';
 		$sql.= ', cr.code as cond_reglement_code, cr.libelle as cond_reglement_libelle, cr.libelle_facture as cond_reglement_libelle_doc';
 		$sql.= ', ca.code as availability_code';
+		$sql.= ', dr.code as demand_reason_code';
 		$sql.= ', el.fk_source';
 		$sql.= ' FROM '.MAIN_DB_PREFIX.'commande as c';
 		$sql.= ' LEFT JOIN '.MAIN_DB_PREFIX.'c_payment_term as cr ON (c.fk_cond_reglement = cr.rowid)';
 		$sql.= ' LEFT JOIN '.MAIN_DB_PREFIX.'c_paiement as p ON (c.fk_mode_reglement = p.id)';
 		$sql.= ' LEFT JOIN '.MAIN_DB_PREFIX.'c_availability as ca ON (c.fk_availability = ca.rowid)';
+		$sql.= ' LEFT JOIN '.MAIN_DB_PREFIX.'c_demand_reason as dr ON (c.fk_demand_reason = ca.rowid)';
 		$sql.= " LEFT JOIN ".MAIN_DB_PREFIX."element_element as el ON el.fk_target = c.rowid AND el.targettype = '".$this->element."'";
 		$sql.= " WHERE c.entity = ".$conf->entity;
 		if ($ref) $sql.= " AND c.ref='".$ref."'";
@@ -1198,6 +1204,8 @@ class Commande extends CommonObject
 				$this->cond_reglement_doc     = $obj->cond_reglement_libelle_doc;
 				$this->availability_id		  = $obj->fk_availability;
 				$this->availability_code      = $obj->availability_code;
+				$this->demand_reason_id		  = $obj->fk_demand_reason;
+				$this->demand_reason_code     = $obj->demand_reason_code;
 				$this->date_livraison         = $this->db->jdate($obj->date_livraison);
 				$this->fk_delivery_address    = $obj->fk_adresse_livraison;
 				$this->propale_id             = $obj->fk_source;
@@ -1810,6 +1818,34 @@ class Commande extends CommonObject
 		}
 	}
 
+	/**
+	 *      \brief      Set source of demand
+	 *      \param      user		  Objet utilisateur qui modifie
+	 *      \param      delivery      delai de livraison
+	 *      \return     int           <0 si ko, >0 si ok
+	 */
+	function set_demand_reason($user, $id)
+	{
+		if ($user->rights->commande->creer)
+		{
+			$sql = "UPDATE ".MAIN_DB_PREFIX."commande ";
+			$sql.= " SET fk_demand_reason = '".$id."'";
+			$sql.= " WHERE rowid = ".$this->id;
+
+			if ($this->db->query($sql))
+			{
+				$this->fk_demand_reason = $id;
+				return 1;
+			}
+			else
+			{
+				$this->error=$this->db->error();
+				dol_syslog("Commande::set_demand_reason Erreur SQL");
+				return -1;
+			}
+		}
+	}
+
 	/**
 	 *    \brief      Return list of orders (eventuelly filtered on a user) into an array
 	 *    \param      brouillon       0=non brouillon, 1=brouillon
@@ -1954,6 +1990,39 @@ class Commande extends CommonObject
 		}
 	}
 
+	/**
+	 *   \brief      Change la source de la demande
+	 *   \param      mode        Id du nouveau mode
+	 *   \return     int         >0 si ok, <0 si ko
+	 */
+	function demand_reason($demand_reason_id)
+	{
+		dol_syslog('Commande::demand_reason('.$demand_reason_id.')');
+		if ($this->statut >= 0)
+		{
+			$sql = 'UPDATE '.MAIN_DB_PREFIX.'commande';
+			$sql .= ' SET fk_demand_reason = '.$demand_reason_id;
+			$sql .= ' WHERE rowid='.$this->id;
+			if ( $this->db->query($sql) )
+			{
+				$this->demand_reason_id = $demand_reason_id;
+				return 1;
+			}
+			else
+			{
+				dol_syslog('Commande::demand_reason Erreur '.$sql.' - '.$this->db->error(), LOG_ERR);
+				$this->error=$this->db->lasterror();
+				return -1;
+			}
+		}
+		else
+		{
+			dol_syslog('Commande::demand_reason, etat facture incompatible', LOG_ERR);
+			$this->error='Etat commande incompatible '.$this->statut;
+			return -2;
+		}
+	}
+
 	/**
 	 *      \brief      Set customer ref
 	 *      \param      user            User that make change
@@ -2495,6 +2564,7 @@ class Commande extends CommonObject
 		$this->cond_reglement_code = 'RECEP';
 		$this->mode_reglement_code = 'CHQ';
 		$this->availability_code   = 'DSP';
+		$this->demand_reason_code  = 'SRC_00';
 		$this->note_public='This is a comment (public)';
 		$this->note='This is a comment (private)';
 		// Lines
diff --git a/htdocs/commande/fiche.php b/htdocs/commande/fiche.php
index 61071567483..78bc6b0cd95 100644
--- a/htdocs/commande/fiche.php
+++ b/htdocs/commande/fiche.php
@@ -208,6 +208,7 @@ if ($action == 'add' && $user->rights->commande->creer)
     $object->cond_reglement_id    = $_POST['cond_reglement_id'];
     $object->mode_reglement_id    = $_POST['mode_reglement_id'];
     $object->availability_id      = $_POST['availability_id'];
+	$object->demand_reason_id     = $_POST['demand_reason_id'];
     $object->date_livraison       = $datelivraison;
     $object->fk_delivery_address  = $_POST['fk_address'];
     $object->contactid            = $_POST['contactidp'];
@@ -463,6 +464,13 @@ if ($action == 'setavailability' && $user->rights->commande->creer)
     if ($result < 0) dol_print_error($db,$object->error);
 }
 
+if ($action == 'setdemandreason' && $user->rights->commande->creer)
+{
+    $object->fetch($id);
+    $result=$object->demand_reason($_POST['demand_reason_id']);
+    if ($result < 0) dol_print_error($db,$object->error);
+}
+
 if ($action == 'setconditions' && $user->rights->commande->creer)
 {
     $object->fetch($id);
@@ -1161,6 +1169,7 @@ if ($action == 'create' && $user->rights->commande->creer)
             $cond_reglement_id  = (!empty($objectsrc->cond_reglement_id)?$objectsrc->cond_reglement_id:(!empty($soc->cond_reglement_id)?$soc->cond_reglement_id:1));
             $mode_reglement_id  = (!empty($objectsrc->mode_reglement_id)?$objectsrc->mode_reglement_id:(!empty($soc->mode_reglement_id)?$soc->mode_reglement_id:0));
             $availability_id  = (!empty($objectsrc->availability_id)?$objectsrc->availability_id:(!empty($soc->availability_id)?$soc->availability_id:0));
+			$demand_reason_id  = (!empty($objectsrc->demand_reason_id)?$objectsrc->demand_reason_id:(!empty($soc->demand_reason_id)?$soc->demand_reason_id:0));
             $remise_percent     = (!empty($objectsrc->remise_percent)?$objectsrc->remise_percent:(!empty($soc->remise_percent)?$soc->remise_percent:0));
             $remise_absolue     = (!empty($objectsrc->remise_absolue)?$objectsrc->remise_absolue:(!empty($soc->remise_absolue)?$soc->remise_absolue:0));
             $dateinvoice        = empty($conf->global->MAIN_AUTOFILL_DATE)?-1:0;
@@ -1174,6 +1183,7 @@ if ($action == 'create' && $user->rights->commande->creer)
         $cond_reglement_id  = $soc->cond_reglement_id;
         $mode_reglement_id  = $soc->mode_reglement_id;
         $availability_id    = $soc->availability_id;
+		$demand_reason_id   = $soc->demand_reason_id;
         $remise_percent     = $soc->remise_percent;
         $remise_absolue     = 0;
         $dateinvoice        = empty($conf->global->MAIN_AUTOFILL_DATE)?-1:0;
@@ -1265,6 +1275,11 @@ if ($action == 'create' && $user->rights->commande->creer)
 	// delai de livraison
     print '<tr><td>'.$langs->trans('AvailabilityPeriod').'</td><td>';
     $html->select_availability($soc->availability,'availability_id');
+    print '</td></tr>';
+
+	// Source de commande
+    print '<tr><td>'.$langs->trans('Source').'</td><td>';
+    $html->select_demand_reason($soc->demand_reason,'demand_reason_id');
     print '</td></tr>';
 
     // Projet
@@ -1743,6 +1758,24 @@ else
             {
                 $html->form_availability($_SERVER['PHP_SELF'].'?id='.$object->id,$object->availability_id,'none');
             }
+            print '</td></tr>';
+
+			// Origine de la demande
+            print '<tr><td height="10">';
+            print '<table class="nobordernopadding" width="100%"><tr><td>';
+            print $langs->trans('Source');
+            print '</td>';
+            if ($_GET['action'] != 'editdemandreason' && $object->brouillon) print '<td align="right"><a href="'.$_SERVER["PHP_SELF"].'?action=editdemandreason&amp;id='.$object->id.'">'.img_edit($langs->trans('SetDemandReason'),1).'</a></td>';
+            print '</tr></table>';
+            print '</td><td colspan="2">';
+            if ($_GET['action'] == 'editdemandreason')
+            {
+                $html->form_demand_reason($_SERVER['PHP_SELF'].'?id='.$object->id,$object->demand_reason_id,'demand_reason_id');
+            }
+            else
+            {
+                $html->form_demand_reason($_SERVER['PHP_SELF'].'?id='.$object->id,$object->demand_reason_id,'none');
+            }
             print '</td></tr>';
 
             // Project
diff --git a/htdocs/core/class/html.form.class.php b/htdocs/core/class/html.form.class.php
index 686b5a7b42a..27e4389d258 100644
--- a/htdocs/core/class/html.form.class.php
+++ b/htdocs/core/class/html.form.class.php
@@ -49,7 +49,7 @@ class Form
     var $cache_types_paiements=array();
     var $cache_conditions_paiements=array();
     var $cache_availability=array();
-	var $cache_source=array();
+	var $cache_demand_reason=array();
 
     var $tva_taux_value;
     var $tva_taux_libelle;
@@ -1538,17 +1538,17 @@ class Form
      *      \brief      Charge dans cache la liste des origines de commande possibles
      *      \return     int             Nb lignes chargees, 0 si deja chargees, <0 si ko
      */
-    function load_cache_source()
+    function load_cache_demand_reason()
     {
         global $langs;
 
-        if (sizeof($this->cache_source)) return 0;    // Cache deja charge
+        if (sizeof($this->cache_demand_reason)) return 0;    // Cache deja charge
 
         $sql = "SELECT rowid, code, label";
-        $sql.= " FROM ".MAIN_DB_PREFIX.'c_source';
+        $sql.= " FROM ".MAIN_DB_PREFIX.'c_demand_reason';
         $sql.= " WHERE active=1";
         $sql.= " ORDER BY rowid";
-        dol_syslog('Form::load_cache_source sql='.$sql,LOG_DEBUG);
+        dol_syslog('Form::load_cache_demand_reason sql='.$sql,LOG_DEBUG);
         $resql = $this->db->query($sql);
         if ($resql)
         {
@@ -1559,9 +1559,9 @@ class Form
                 $obj = $this->db->fetch_object($resql);
 
                 // Si traduction existe, on l'utilise, sinon on prend le libelle par defaut
-                $label=($langs->trans("SourceType".$obj->code)!=("SourceType".$obj->code)?$langs->trans("SourceType".$obj->code):($obj->label!='-'?$obj->label:''));
-                $this->cache_source[$obj->rowid]['code'] =$obj->code;
-                $this->cache_source[$obj->rowid]['label']=$label;
+                $label=($langs->trans("DemandReasonType".$obj->code)!=("DemandReasonType".$obj->code)?$langs->trans("DemandReasonType".$obj->code):($obj->label!='-'?$obj->label:''));
+                $this->cache_demand_reason[$obj->rowid]['code'] =$obj->code;
+                $this->cache_demand_reason[$obj->rowid]['label']=$label;
                 $i++;
             }
             return 1;
@@ -1579,15 +1579,15 @@ class Form
      *      \param      filtertype      Pour filtre
      *		\param		addempty		Ajoute entree vide
      */
-    function select_source($selected='',$htmlname='sourceid',$filtertype='',$addempty=0)
+    function select_demand_reason($selected='',$htmlname='demandreasonid',$filtertype='',$addempty=0)
     {
         global $langs,$user;
 
-        $this->load_cache_source();
+        $this->load_cache_demand_reason();
 
         print '<select class="flat" name="'.$htmlname.'">';
         if ($addempty) print '<option value="0">&nbsp;</option>';
-        foreach($this->cache_source as $id => $arraysource)
+        foreach($this->cache_demand_reason as $id => $arraydemandreason)
         {
             if ($selected == $id)
             {
@@ -1597,7 +1597,7 @@ class Form
             {
                 print '<option value="'.$id.'">';
             }
-            print $arraysource['label'];
+            print $arraydemandreason['label'];
             print '</option>';
         }
         print '</select>';
@@ -2238,17 +2238,17 @@ class Form
      *    	\param      htmlname    	Name of select html field
      *		\param		addempty		Ajoute entree vide
      */
-    function form_source($page, $selected='', $htmlname='source', $addempty=0)
+    function form_demand_reason($page, $selected='', $htmlname='demandreason', $addempty=0)
     {
         global $langs;
         if ($htmlname != "none")
         {
             print '<form method="post" action="'.$page.'">';
-            print '<input type="hidden" name="action" value="setsource">';
+            print '<input type="hidden" name="action" value="setdemandreason">';
             print '<input type="hidden" name="token" value="'.$_SESSION['newtoken'].'">';
             print '<table class="nobordernopadding" cellpadding="0" cellspacing="0">';
             print '<tr><td>';
-            $this->select_source($selected,$htmlname,-1,$addempty);
+            $this->select_demand_reason($selected,$htmlname,-1,$addempty);
             print '</td>';
             print '<td align="left"><input type="submit" class="button" value="'.$langs->trans("Modify").'"></td>';
             print '</tr></table></form>';
@@ -2257,8 +2257,8 @@ class Form
         {
             if ($selected)
             {
-                $this->load_cache_source();
-                print $this->cache_source[$selected]['label'];
+                $this->load_cache_demand_reason();
+                print $this->cache_demand_reason[$selected]['label'];
             } else {
                 print "&nbsp;";
             }
diff --git a/htdocs/install/mysql/migration/3.0.0-3.1.0.sql b/htdocs/install/mysql/migration/3.0.0-3.1.0.sql
index 6b38dd36f2c..a106b09e202 100755
--- a/htdocs/install/mysql/migration/3.0.0-3.1.0.sql
+++ b/htdocs/install/mysql/migration/3.0.0-3.1.0.sql
@@ -37,6 +37,7 @@ DELETE FROM llx_const WHERE __DECRYPT('name')__ = 'MAIN_MENUFRONT_BARRELEFT';
 
 ALTER TABLE llx_facture_fourn ADD COLUMN ref_ext varchar(30) AFTER entity;
 ALTER TABLE llx_commande_fournisseur ADD COLUMN ref_ext varchar(30) AFTER entity;
+ALTER TABLE llx_commande ADD COLUMN fk_demand_reason int(11) AFTER fk_availability;
 
 
 ALTER TABLE llx_facturedet DROP INDEX uk_fk_remise_except;