diff --git a/htdocs/comm/card.php b/htdocs/comm/card.php
index e8e038f33eb..fab7cfa6fa9 100644
--- a/htdocs/comm/card.php
+++ b/htdocs/comm/card.php
@@ -883,6 +883,7 @@ if ($object->id > 0) {
 		$sql .= ", c.total_ttc";
 		$sql .= ", c.ref, c.ref_client, c.fk_statut, c.facture";
 		$sql .= ", c.date_commande as dc";
+		$sql .= ", c.facture as billed";
 		$sql .= " FROM ".MAIN_DB_PREFIX."societe as s, ".MAIN_DB_PREFIX."commande as c";
 		$sql .= " WHERE c.fk_soc = s.rowid ";
 		$sql .= " AND s.rowid = ".$object->id;
diff --git a/htdocs/core/tpl/commonfields_add.tpl.php b/htdocs/core/tpl/commonfields_add.tpl.php
index 639be537dba..3a43f04c149 100644
--- a/htdocs/core/tpl/commonfields_add.tpl.php
+++ b/htdocs/core/tpl/commonfields_add.tpl.php
@@ -82,7 +82,7 @@ foreach ($object->fields as $key => $val) {
 	} else {
 		$value = GETPOST($key, 'alphanohtml');
 	}
-	if ($val['noteditable']) {
+	if (!empty($val['noteditable'])) {
 		print $object->showOutputField($val, $key, $value, '', '', '', 0);
 	} else {
 		print $object->showInputField($val, $key, $value, '', '', '', 0);
diff --git a/htdocs/expensereport/class/expensereport.class.php b/htdocs/expensereport/class/expensereport.class.php
index 25ee6072a90..34bef81e5a2 100644
--- a/htdocs/expensereport/class/expensereport.class.php
+++ b/htdocs/expensereport/class/expensereport.class.php
@@ -3,7 +3,7 @@
  * Copyright (C) 2015 		Laurent Destailleur 	<eldy@users.sourceforge.net>
  * Copyright (C) 2015 		Alexandre Spangaro  	<aspangaro@open-dsi.fr>
  * Copyright (C) 2018       Nicolas ZABOURI         <info@inovea-conseil.com>
- * Copyright (c) 2018       Frédéric France         <frederic.france@netlogic.fr>
+ * Copyright (c) 2018-2021  Frédéric France         <frederic.france@netlogic.fr>
  * Copyright (C) 2016-2020 	Ferran Marcet       	<fmarcet@2byte.es>
  *
  * This program is free software; you can redistribute it and/or modify
@@ -2478,9 +2478,9 @@ class ExpenseReport extends CommonObject
 
 		$now = dol_now();
 		if ($option == 'toapprove') {
-			return ($this->datevalid ? $this->datevalid : $this->date_valid) < ($now - $conf->expensereport->approve->warning_delay);
+			return (!empty($this->datevalid) ? $this->datevalid : $this->date_valid) < ($now - $conf->expensereport->approve->warning_delay);
 		} else {
-			return ($this->datevalid ? $this->datevalid : $this->date_valid) < ($now - $conf->expensereport->payment->warning_delay);
+			return (!empty($this->datevalid) ? $this->datevalid : $this->date_valid) < ($now - $conf->expensereport->payment->warning_delay);
 		}
 	}
 
diff --git a/htdocs/holiday/list.php b/htdocs/holiday/list.php
index 224e3583bbd..c62185d5f2a 100644
--- a/htdocs/holiday/list.php
+++ b/htdocs/holiday/list.php
@@ -722,6 +722,7 @@ if ($resql) {
 
 		$i = 0;
 		$totalarray = array();
+		$totalarray['nbfield'] = 0;
 		while ($i < min($num, $limit)) {
 			$obj = $db->fetch_object($resql);
 
diff --git a/htdocs/langs/en_US/stocks.lang b/htdocs/langs/en_US/stocks.lang
index 93cf9e9e037..977aab588a2 100644
--- a/htdocs/langs/en_US/stocks.lang
+++ b/htdocs/langs/en_US/stocks.lang
@@ -255,3 +255,4 @@ MakeMovementsAndClose=Generate movements and close
 AutofillWithExpected=Fill real quantity with expected quantity
 ShowAllBatchByDefault=By default, show batch details on product "stock" tab
 CollapseBatchDetailHelp=You can set batch detail default display in stocks module configuration
+FieldCannotBeNegative=Field "%s" cannot be negative
\ No newline at end of file
diff --git a/htdocs/product/inventory/inventory.php b/htdocs/product/inventory/inventory.php
index 2abc830eb7c..644e7ba2025 100644
--- a/htdocs/product/inventory/inventory.php
+++ b/htdocs/product/inventory/inventory.php
@@ -185,8 +185,11 @@ if ($action =='updateinventorylines' && $permissiontoadd) {
 
 			if (GETPOST("id_".$lineid, 'alpha') != '') {		// If a value was set ('0' or something else)
 				$qtytoupdate = price2num(GETPOST("id_".$lineid, 'alpha'), 'MS');
-
 				$result = $inventoryline->fetch($lineid);
+				if ($qtytoupdate < 0) {
+					$result = -1;
+					setEventMessages($langs->trans("FieldCannotBeNegative", $langs->transnoentitiesnoconv("RealQty")), null, 'errors');
+				}
 				if ($result > 0) {
 					$inventoryline->qty_view = $qtytoupdate;
 					$resultupdate = $inventoryline->update($user);
@@ -251,7 +254,10 @@ if (empty($reshook)) {
 			$error++;
 			setEventMessages($langs->trans("ErrorFieldRequired", $langs->transnoentitiesnoconv("Product")), null, 'errors');
 		}
-
+		if (price2num(GETPOST('qtytoadd'), 'MS') < 0) {
+			$error++;
+			setEventMessages($langs->trans("FieldCannotBeNegative", $langs->transnoentitiesnoconv("RealQty")), null, 'errors');
+		}
 		if (!$error && !empty($conf->productbatch->enabled)) {
 			$tmpproduct = new Product($db);
 			$result = $tmpproduct->fetch($fk_product);
@@ -654,7 +660,7 @@ if ($object->id > 0) {
 			// Real quantity
 			print '<td class="center">';
 			if ($object->status == $object::STATUS_VALIDATED) {
-				$qty_view = GETPOST("id_".$obj->rowid) ? GETPOST("id_".$obj->rowid) : $obj->qty_view;
+				$qty_view = GETPOST("id_".$obj->rowid) && price2num(GETPOST("id_".$obj->rowid), 'MS') >= 0 ? GETPOST("id_".$obj->rowid) : $obj->qty_view;
 				$totalfound += price2num($qty_view, 'MS');
 				print '<input type="text" class="maxwidth75 right realqty" name="id_'.$obj->rowid.'" id="id_'.$obj->rowid.'_input" value="'.$qty_view.'">';
 				print '</td>';