diff --git a/htdocs/accountancy/admin/index.php b/htdocs/accountancy/admin/index.php
index f8c0c95d3c1..4f4bff526c8 100644
--- a/htdocs/accountancy/admin/index.php
+++ b/htdocs/accountancy/admin/index.php
@@ -1,7 +1,7 @@
 <?php
 /* Copyright (C) 2013-2014 Olivier Geffroy      <jeff@jeffinfo.com>
  * Copyright (C) 2013-2014 Florian Henry        <florian.henry@open-concept.pro>
- * Copyright (C) 2013-2019 Alexandre Spangaro   <aspangaro@open-dsi.fr>
+ * Copyright (C) 2013-2021 Alexandre Spangaro   <aspangaro@open-dsi.fr>
  * Copyright (C) 2014-2015 Ari Elbaz (elarifr)  <github@accedinfo.com>
  * Copyright (C) 2014      Marcos García        <marcosgdf@gmail.com>
  * Copyright (C) 2014      Juanjo Menent        <jmenent@2byte.es>
@@ -260,6 +260,22 @@ $linkback = '';
 //$linkback = '<a href="' . DOL_URL_ROOT . '/admin/modules.php?restore_lastsearch_values=1">' . $langs->trans("BackToModuleList") . '</a>';
 print load_fiche_titre($title, $linkback, 'accountancy');
 
+// Show message if accountancy hidden options are activated to help to resolve some problems
+if (!$user->admin) {
+	if (!empty($conf->global->FACTURE_DEPOSITS_ARE_JUST_PAYMENTS)) {
+		print '<div class="info">' . $langs->trans("ConstantIsOn", "FACTURE_DEPOSITS_ARE_JUST_PAYMENTS") . '</div>';
+	}
+	if (!empty($conf->global->ACCOUNTANCY_USE_PRODUCT_ACCOUNT_ON_THIRDPARTY)) {
+		print '<div class="info">' . $langs->trans("ConstantIsOn", "ACCOUNTANCY_USE_PRODUCT_ACCOUNT_ON_THIRDPARTY") . '</div>';
+	}
+	if (!empty($conf->global->MAIN_COMPANY_PERENTITY_SHARED)) {
+		print '<div class="info">' . $langs->trans("ConstantIsOn", "MAIN_COMPANY_PERENTITY_SHARED") . '</div>';
+	}
+	if (!empty($conf->global->MAIN_PRODUCT_PERENTITY_SHARED)) {
+		print '<div class="info">' . $langs->trans("ConstantIsOn", "MAIN_PRODUCT_PERENTITY_SHARED") . '</div>';
+	}
+}
+
 print '<form action="'.$_SERVER["PHP_SELF"].'" method="post">';
 print '<input type="hidden" name="token" value="'.newToken().'">';
 print '<input type="hidden" name="action" value="update">';
diff --git a/htdocs/accountancy/class/bookkeeping.class.php b/htdocs/accountancy/class/bookkeeping.class.php
index 2c715aa9fd6..43dcce8c646 100644
--- a/htdocs/accountancy/class/bookkeeping.class.php
+++ b/htdocs/accountancy/class/bookkeeping.class.php
@@ -937,7 +937,6 @@ class BookKeeping extends CommonObject
 				$line->piece_num = $obj->piece_num;
 				$line->date_creation = $this->db->jdate($obj->date_creation);
 				$line->date_export = $this->db->jdate($obj->date_export);
-				$line->date_validation = $this->db->jdate($obj->date_validated);
 				$line->date_validation = $this->db->jdate($obj->date_validation);
 
 				$this->lines[] = $line;
@@ -1090,7 +1089,6 @@ class BookKeeping extends CommonObject
 				$line->date_lim_reglement = $this->db->jdate($obj->date_lim_reglement);
 				$line->date_modification = $this->db->jdate($obj->date_modification);
 				$line->date_export = $this->db->jdate($obj->date_export);
-				$line->date_validation = $this->db->jdate($obj->date_validated);
 				$line->date_validation = $this->db->jdate($obj->date_validation);
 
 				$this->lines[] = $line;
@@ -1751,7 +1749,6 @@ class BookKeeping extends CommonObject
 				$line->date_creation = $obj->date_creation;
 				$line->date_modification = $obj->date_modification;
 				$line->date_export = $obj->date_export;
-				$line->date_validation = $obj->date_validated;
 				$line->date_validation = $obj->date_validation;
 
 				$this->linesmvt[] = $line;
@@ -1816,7 +1813,6 @@ class BookKeeping extends CommonObject
 				$line->sens = $obj->sens;
 				$line->code_journal = $obj->code_journal;
 				$line->piece_num = $obj->piece_num;
-				$line->date_validation = $obj->date_validated;
 				$line->date_validation = $obj->date_validation;
 
 				$this->linesexport[] = $line;
diff --git a/htdocs/core/lib/accounting.lib.php b/htdocs/core/lib/accounting.lib.php
index 68af901a757..21afb5f3490 100644
--- a/htdocs/core/lib/accounting.lib.php
+++ b/htdocs/core/lib/accounting.lib.php
@@ -103,7 +103,7 @@ function length_accountg($account)
 		return $account;
 	}
 
-	$g = $conf->global->ACCOUNTING_LENGTH_GACCOUNT;
+	$g = getDolGlobalInt('ACCOUNTING_LENGTH_GACCOUNT');
 	if (!is_empty($g)) {
 		// Clean parameters
 		$i = strlen($account);
@@ -142,7 +142,7 @@ function length_accounta($accounta)
 		return $accounta;
 	}
 
-	$a = $conf->global->ACCOUNTING_LENGTH_AACCOUNT;
+	$a = getDolGlobalInt('ACCOUNTING_LENGTH_AACCOUNT');
 	if (!is_empty($a)) {
 		// Clean parameters
 		$i = strlen($accounta);
diff --git a/htdocs/install/upgrade2.php b/htdocs/install/upgrade2.php
index ea71b1947e7..5294bdf8f11 100644
--- a/htdocs/install/upgrade2.php
+++ b/htdocs/install/upgrade2.php
@@ -530,7 +530,7 @@ if (!GETPOST('action', 'aZ09') || preg_match('/upgrade/i', GETPOST('action', 'aZ
 
 	// Can call a dedicated external upgrade process
 	if (!$error) {
-		$parameters = array('versionfrom'=>$versionfrom, 'versionto='.$versionto);
+		$parameters = array('versionfrom' => $versionfrom, 'versionto' => $versionto);
 		$object = new stdClass();
 		$action = "upgrade";
 		$reshook = $hookmanager->executeHooks('doUpgrade2', $parameters, $object, $action); // Note that $action and $object may have been modified by some hooks