diff --git a/htdocs/core/modules/supplier_order/mod_commande_fournisseur_muguet.php b/htdocs/core/modules/supplier_order/mod_commande_fournisseur_muguet.php
index f406b81b477..e981ce35a2e 100644
--- a/htdocs/core/modules/supplier_order/mod_commande_fournisseur_muguet.php
+++ b/htdocs/core/modules/supplier_order/mod_commande_fournisseur_muguet.php
@@ -37,7 +37,10 @@ class mod_commande_fournisseur_muguet extends ModeleNumRefSuppliersOrders
      */
 	public $version = 'dolibarr';		// 'development', 'experimental', 'dolibarr'
 
-	public $error = '';
+	/**
+     * @var string Error code (or message)
+     */
+    public $error = '';
 
 	public $nom = 'Muguet';
 
diff --git a/htdocs/core/modules/supplier_order/mod_commande_fournisseur_orchidee.php b/htdocs/core/modules/supplier_order/mod_commande_fournisseur_orchidee.php
index d8cd1d1f51b..1b265541789 100644
--- a/htdocs/core/modules/supplier_order/mod_commande_fournisseur_orchidee.php
+++ b/htdocs/core/modules/supplier_order/mod_commande_fournisseur_orchidee.php
@@ -38,7 +38,10 @@ class mod_commande_fournisseur_orchidee extends ModeleNumRefSuppliersOrders
      */
 	public $version = 'dolibarr';		// 'development', 'experimental', 'dolibarr'
 
-	public $error = '';
+	/**
+     * @var string Error code (or message)
+     */
+    public $error = '';
 
 	public $nom = 'Orchidee';
 
diff --git a/htdocs/core/modules/supplier_payment/mod_supplier_payment_brodator.php b/htdocs/core/modules/supplier_payment/mod_supplier_payment_brodator.php
index 32c0d161fd1..594fbad1ec6 100644
--- a/htdocs/core/modules/supplier_payment/mod_supplier_payment_brodator.php
+++ b/htdocs/core/modules/supplier_payment/mod_supplier_payment_brodator.php
@@ -36,7 +36,10 @@ class mod_supplier_payment_brodator extends ModeleNumRefSupplierPayments
      */
 	public $version = 'dolibarr';		// 'development', 'experimental', 'dolibarr'
 
-	public $error = '';
+	/**
+     * @var string Error code (or message)
+     */
+    public $error = '';
 
 	public $nom = 'Brodator';
 
diff --git a/htdocs/core/modules/supplier_proposal/mod_supplier_proposal_saphir.php b/htdocs/core/modules/supplier_proposal/mod_supplier_proposal_saphir.php
index 6619771f0a1..0968fe10e11 100644
--- a/htdocs/core/modules/supplier_proposal/mod_supplier_proposal_saphir.php
+++ b/htdocs/core/modules/supplier_proposal/mod_supplier_proposal_saphir.php
@@ -39,7 +39,10 @@ class mod_supplier_proposal_saphir extends ModeleNumRefSupplierProposal
      */
 	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/ticket/mod_ticket_simple.php b/htdocs/core/modules/ticket/mod_ticket_simple.php
index a2201208534..68b62e8afcb 100644
--- a/htdocs/core/modules/ticket/mod_ticket_simple.php
+++ b/htdocs/core/modules/ticket/mod_ticket_simple.php
@@ -37,8 +37,14 @@ class mod_ticket_simple extends ModeleNumRefTicket
 	public $version = 'dolibarr'; // 'development', 'experimental', 'dolibarr'
 
     public $prefix = 'TS';
+
+    /**
+     * @var string Error code (or message)
+     */
     public $error = '';
+
     public $nom = "Simple";
+
     public $name = "Simple";
 
     /**
diff --git a/htdocs/core/modules/ticket/mod_ticket_universal.php b/htdocs/core/modules/ticket/mod_ticket_universal.php
index ee201740eed..ece0959d050 100644
--- a/htdocs/core/modules/ticket/mod_ticket_universal.php
+++ b/htdocs/core/modules/ticket/mod_ticket_universal.php
@@ -35,8 +35,13 @@ class mod_ticket_universal extends ModeleNumRefTicket
      */
 	public $version = 'dolibarr'; // 'development', 'experimental', 'dolibarr'
 
+    /**
+     * @var string Error code (or message)
+     */
     public $error = '';
+
     public $nom = 'Universal';
+
     public $name = 'Universal';
 
     /**
diff --git a/htdocs/core/modules/ticket/modules_ticket.php b/htdocs/core/modules/ticket/modules_ticket.php
index d6f8b06d0e8..28587825d34 100644
--- a/htdocs/core/modules/ticket/modules_ticket.php
+++ b/htdocs/core/modules/ticket/modules_ticket.php
@@ -29,6 +29,9 @@
  */
 abstract class ModeleNumRefTicket
 {
+    /**
+     * @var string Error code (or message)
+     */
     public $error = '';
 
     /**
diff --git a/htdocs/modulebuilder/template/class/actions_mymodule.class.php b/htdocs/modulebuilder/template/class/actions_mymodule.class.php
index 45008aa76f3..7d85d804d25 100644
--- a/htdocs/modulebuilder/template/class/actions_mymodule.class.php
+++ b/htdocs/modulebuilder/template/class/actions_mymodule.class.php
@@ -32,10 +32,12 @@ class ActionsMyModule
      * @var DoliDB Database handler.
      */
     public $db;
+
     /**
-     * @var string Error
+     * @var string Error code (or message)
      */
     public $error = '';
+
     /**
      * @var array Errors
      */