diff --git a/src/Model/Objects/NotificationBody/AbstractBlikAlias.php b/src/Model/Objects/NotificationBody/AbstractBlikAlias.php
index d7c4e9b..d0a04f1 100644
--- a/src/Model/Objects/NotificationBody/AbstractBlikAlias.php
+++ b/src/Model/Objects/NotificationBody/AbstractBlikAlias.php
@@ -21,7 +21,7 @@ class AbstractBlikAlias extends Objects
     /** @var Type */
     public $type;
 
-    /** @var ExpirationDate */
+    /** @var null|ExpirationDate */
     public $expirationDate;
 
     static protected $requiresExpirationDate = false;
diff --git a/src/Model/Objects/NotificationBody/BasicPayment.php b/src/Model/Objects/NotificationBody/BasicPayment.php
index 920a01f..c02ed8d 100644
--- a/src/Model/Objects/NotificationBody/BasicPayment.php
+++ b/src/Model/Objects/NotificationBody/BasicPayment.php
@@ -83,40 +83,40 @@ class BasicPayment extends Objects
     /** @var Email */
     public $tr_email;
 
-    /** @var Currency */
+    /** @var null|Currency */
     public $tr_currency;
 
     /** @var Md5sum */
     public $md5sum;
 
-    /** @var TestMode */
+    /** @var null|TestMode */
     public $test_mode;
 
-    /** @var Wallet */
+    /** @var null|Wallet */
     public $wallet;
 
-    /** @var Masterpass */
+    /** @var null|Masterpass */
     public $masterpass;
 
-    /** @var TransactionChannel */
+    /** @var null|TransactionChannel */
     public $tr_channel;
 
-    /** @var CardToken */
+    /** @var null|CardToken */
     public $card_token;
 
-    /** @var TokenValue */
+    /** @var null|TokenValue */
     public $tokenPaymentData_tokenValue;
 
-    /** @var InitialTransactionId */
+    /** @var null|InitialTransactionId */
     public $tokenPaymentData_initialTransactionId;
 
-    /** @var CardExpiryDate */
+    /** @var null|CardExpiryDate */
     public $tokenPaymentData_cardExpiryDate;
 
-    /** @var CardBrand */
+    /** @var null|CardBrand */
     public $tokenPaymentData_cardBrand;
 
-    /** @var CardTail */
+    /** @var null|CardTail */
     public $tokenPaymentData_cardTail;
 
     public function getRequiredFields()
diff --git a/src/Model/Objects/NotificationBody/MarketplaceTransaction.php b/src/Model/Objects/NotificationBody/MarketplaceTransaction.php
index b0cbd2c..89602cc 100644
--- a/src/Model/Objects/NotificationBody/MarketplaceTransaction.php
+++ b/src/Model/Objects/NotificationBody/MarketplaceTransaction.php
@@ -56,7 +56,7 @@ class MarketplaceTransaction extends Objects
     /** @var TransactionDescription */
     public $transactionDescription;
 
-    /** @var CardToken */
+    /** @var null|CardToken */
     public $cardToken;
 
     public function getRequiredFields()
diff --git a/src/Model/Objects/NotificationBody/Recurring.php b/src/Model/Objects/NotificationBody/Recurring.php
index 1d6bcb1..387303a 100644
--- a/src/Model/Objects/NotificationBody/Recurring.php
+++ b/src/Model/Objects/NotificationBody/Recurring.php
@@ -43,10 +43,10 @@ class Recurring extends Objects
     /** @var Status */
     public $status;
 
-    /** @var NextChargeDate */
+    /** @var null|NextChargeDate */
     public $nextChargeDate;
 
-    /** @var Reason */
+    /** @var null|Reason */
     public $reason;
 
     public function getRequiredFields()
diff --git a/src/Model/Objects/Objects.php b/src/Model/Objects/Objects.php
index 6662862..1478f1c 100644
--- a/src/Model/Objects/Objects.php
+++ b/src/Model/Objects/Objects.php
@@ -27,7 +27,7 @@ public function __construct()
         $this->factory = new ArrayObjectFactory();
     }
 
-    /** @return array<Field|self> */
+    /** @return array */
     public function getRequiredFields()
     {
         return [];