diff --git a/htdocs/core/modules/holiday/mod_holiday_immaculate.php b/htdocs/core/modules/holiday/mod_holiday_immaculate.php
index 8d712253a8d..9f74e6d1419 100644
--- a/htdocs/core/modules/holiday/mod_holiday_immaculate.php
+++ b/htdocs/core/modules/holiday/mod_holiday_immaculate.php
@@ -36,6 +36,9 @@ class mod_holiday_immaculate extends ModelNumRefHolidays
      */
 	public $version = 'dolibarr';
 
+	/**
+	 * @var string Error message
+	 */
 	public $error = '';
 
 	public $nom = 'Immaculate';
diff --git a/htdocs/core/modules/livraison/mod_livraison_jade.php b/htdocs/core/modules/livraison/mod_livraison_jade.php
index 7578ed2728f..eed356336b0 100644
--- a/htdocs/core/modules/livraison/mod_livraison_jade.php
+++ b/htdocs/core/modules/livraison/mod_livraison_jade.php
@@ -40,6 +40,9 @@ class mod_livraison_jade extends ModeleNumRefDeliveryOrder
      */
 	public $version = 'dolibarr';		// 'development', 'experimental', 'dolibarr'
 
+	/**
+	 * @var string Error message
+	 */
 	public $error = '';
 
 	public $nom = "Jade";
diff --git a/htdocs/core/modules/livraison/mod_livraison_saphir.php b/htdocs/core/modules/livraison/mod_livraison_saphir.php
index 4c43f8c6136..1a07341c520 100644
--- a/htdocs/core/modules/livraison/mod_livraison_saphir.php
+++ b/htdocs/core/modules/livraison/mod_livraison_saphir.php
@@ -37,6 +37,9 @@ class mod_livraison_saphir extends ModeleNumRefDeliveryOrder
      */
 	public $version = 'dolibarr';		// 'development', 'experimental', 'dolibarr'
 
+	/**
+	 * @var string Error message
+	 */
 	public $error = '';
 
 	public $nom = 'Saphir';
diff --git a/htdocs/core/modules/payment/mod_payment_ant.php b/htdocs/core/modules/payment/mod_payment_ant.php
index 1c6bcdc4150..cc66b39e4f4 100644
--- a/htdocs/core/modules/payment/mod_payment_ant.php
+++ b/htdocs/core/modules/payment/mod_payment_ant.php
@@ -36,6 +36,9 @@ class mod_payment_ant extends ModeleNumRefPayments
      */
 	public $version = 'dolibarr';		// 'development', 'experimental', 'dolibarr'
 
+	/**
+	 * @var string Error message
+	 */
 	public $error = '';
 
 	public $nom = 'Ant';
diff --git a/htdocs/core/modules/project/mod_project_universal.php b/htdocs/core/modules/project/mod_project_universal.php
index 2426da13e87..f9ce0b38c62 100644
--- a/htdocs/core/modules/project/mod_project_universal.php
+++ b/htdocs/core/modules/project/mod_project_universal.php
@@ -36,7 +36,10 @@ class mod_project_universal extends ModeleNumRefProjects
      */
 	public $version = 'dolibarr';		// 'development', 'experimental', 'dolibarr'
 
-	public $error = '';
+	/**
+     * @var string Error code (or message)
+     */
+    public $error = '';
 
 	public $nom = 'Universal';
 
diff --git a/htdocs/core/modules/project/task/mod_task_universal.php b/htdocs/core/modules/project/task/mod_task_universal.php
index e0d82164585..4ffb0424d8a 100644
--- a/htdocs/core/modules/project/task/mod_task_universal.php
+++ b/htdocs/core/modules/project/task/mod_task_universal.php
@@ -36,7 +36,10 @@ class mod_task_universal extends ModeleNumRefTask
      */
 	public $version = 'dolibarr';		// 'development', 'experimental', 'dolibarr'
 
-	public $error = '';
+	/**
+     * @var string Error code (or message)
+     */
+    public $error = '';
 
 	public $nom = 'Universal';
 
diff --git a/htdocs/core/modules/propale/mod_propale_saphir.php b/htdocs/core/modules/propale/mod_propale_saphir.php
index b00011bdc42..fab4d2b86e7 100644
--- a/htdocs/core/modules/propale/mod_propale_saphir.php
+++ b/htdocs/core/modules/propale/mod_propale_saphir.php
@@ -39,7 +39,10 @@ class mod_propale_saphir extends ModeleNumRefPropales
      */
 	public $version = 'dolibarr';		// 'development', 'experimental', 'dolibarr'
 
-	public $error = '';
+	/**
+     * @var string Error code (or message)
+     */
+    public $error = '';
 
 	public $nom = 'Saphir';
 
diff --git a/htdocs/core/modules/supplier_invoice/mod_facture_fournisseur_cactus.php b/htdocs/core/modules/supplier_invoice/mod_facture_fournisseur_cactus.php
index 24c66752314..618079160b7 100644
--- a/htdocs/core/modules/supplier_invoice/mod_facture_fournisseur_cactus.php
+++ b/htdocs/core/modules/supplier_invoice/mod_facture_fournisseur_cactus.php
@@ -39,7 +39,10 @@ class mod_facture_fournisseur_cactus extends ModeleNumRefSuppliersInvoices
      */
 	public $version = 'dolibarr';		// 'development', 'experimental', 'dolibarr'
 
-	public $error = '';
+	/**
+     * @var string Error code (or message)
+     */
+    public $error = '';
 
 	public $nom = 'Cactus';
 
diff --git a/htdocs/core/modules/supplier_invoice/mod_facture_fournisseur_tulip.php b/htdocs/core/modules/supplier_invoice/mod_facture_fournisseur_tulip.php
index 6eff4a8f378..28c18c96e2f 100644
--- a/htdocs/core/modules/supplier_invoice/mod_facture_fournisseur_tulip.php
+++ b/htdocs/core/modules/supplier_invoice/mod_facture_fournisseur_tulip.php
@@ -42,7 +42,10 @@ class mod_facture_fournisseur_tulip extends ModeleNumRefSuppliersInvoices
      */
 	public $version = 'dolibarr';		// 'development', 'experimental', 'dolibarr'
 
-	public $error = '';
+	/**
+     * @var string Error code (or message)
+     */
+    public $error = '';
 
 	public $nom = 'Tulip';