diff --git a/src/Webpay/TransaccionCompleta/Responses/MallTransactionCreateResponse.php b/src/Webpay/TransaccionCompleta/Responses/MallTransactionCreateResponse.php
index 4767aa65..3ef51d37 100644
--- a/src/Webpay/TransaccionCompleta/Responses/MallTransactionCreateResponse.php
+++ b/src/Webpay/TransaccionCompleta/Responses/MallTransactionCreateResponse.php
@@ -6,7 +6,7 @@
 
 class MallTransactionCreateResponse
 {
-    public string $token;
+    public ?string $token;
 
     public function __construct(array $json)
     {
diff --git a/src/Webpay/TransaccionCompleta/Responses/MallTransactionInstallmentsResponse.php b/src/Webpay/TransaccionCompleta/Responses/MallTransactionInstallmentsResponse.php
index e9ef4a1f..b826cef3 100644
--- a/src/Webpay/TransaccionCompleta/Responses/MallTransactionInstallmentsResponse.php
+++ b/src/Webpay/TransaccionCompleta/Responses/MallTransactionInstallmentsResponse.php
@@ -7,8 +7,8 @@
 class MallTransactionInstallmentsResponse
 {
     public ?float $installmentsAmount;
-    public string $idQueryInstallments;
-    public array $deferredPeriods;
+    public ?string $idQueryInstallments;
+    public ?array $deferredPeriods;
 
     public function __construct(array $json)
     {
@@ -26,17 +26,17 @@ public function getInstallmentsAmount(): ?float
     }
 
     /**
-     * @return string
+     * @return ?string
      */
-    public function getIdQueryInstallments(): string
+    public function getIdQueryInstallments(): ?string
     {
         return $this->idQueryInstallments;
     }
 
     /**
-     * @return array
+     * @return ?array
      */
-    public function getDeferredPeriods(): array
+    public function getDeferredPeriods(): ?array
     {
         return $this->deferredPeriods;
     }
diff --git a/src/Webpay/TransaccionCompleta/Responses/MallTransactionRefundResponse.php b/src/Webpay/TransaccionCompleta/Responses/MallTransactionRefundResponse.php
index 1ae9f210..c038b4f3 100644
--- a/src/Webpay/TransaccionCompleta/Responses/MallTransactionRefundResponse.php
+++ b/src/Webpay/TransaccionCompleta/Responses/MallTransactionRefundResponse.php
@@ -6,12 +6,12 @@
 
 class MallTransactionRefundResponse
 {
-    public string $type;
+    public ?string $type;
     public ?string $authorizationCode;
     public ?string $authorizationDate;
     public ?float $nullifiedAmount;
     public ?float $balance;
-    public int $responseCode;
+    public ?int $responseCode;
 
     public function __construct(array $json)
     {
@@ -24,9 +24,9 @@ public function __construct(array $json)
     }
 
     /**
-     * @return string
+     * @return ?string
      */
-    public function getType(): string
+    public function getType(): ?string
     {
         return $this->type;
     }
@@ -64,10 +64,10 @@ public function getBalance(): ?float
     }
 
     /**
-     * @return int
+     * @return ?int
      */
-    public function getResponseCode(): int
+    public function getResponseCode(): ?int
     {
-        return (int) $this->responseCode;
+        return $this->responseCode;
     }
 }
diff --git a/src/Webpay/TransaccionCompleta/Responses/MallTransactionStatusResponse.php b/src/Webpay/TransaccionCompleta/Responses/MallTransactionStatusResponse.php
index 5b20be91..682dce26 100644
--- a/src/Webpay/TransaccionCompleta/Responses/MallTransactionStatusResponse.php
+++ b/src/Webpay/TransaccionCompleta/Responses/MallTransactionStatusResponse.php
@@ -6,12 +6,12 @@
 
 class MallTransactionStatusResponse
 {
-    protected string $buyOrder;
-    protected array $cardDetail;
-    protected string $cardNumber;
-    protected string $accountingDate;
-    protected string $transactionDate;
-    protected array $details;
+    protected ?string $buyOrder;
+    protected ?array $cardDetail;
+    protected ?string $cardNumber;
+    protected ?string $accountingDate;
+    protected ?string $transactionDate;
+    protected ?array $details;
 
     public function __construct(array $json)
     {
@@ -30,49 +30,49 @@ public function __construct(array $json)
     }
 
     /**
-     * @return string
+     * @return ?string
      */
-    public function getBuyOrder(): string
+    public function getBuyOrder(): ?string
     {
         return $this->buyOrder;
     }
 
     /**
-     * @return array
+     * @return ?array
      */
-    public function getCardDetail(): array
+    public function getCardDetail(): ?array
     {
         return $this->cardDetail;
     }
 
     /**
-     * @return string
+     * @return ?string
      */
-    public function getAccountingDate(): string
+    public function getAccountingDate(): ?string
     {
         return $this->accountingDate;
     }
 
     /**
-     * @return string
+     * @return ?string
      */
-    public function getTransactionDate(): string
+    public function getTransactionDate(): ?string
     {
         return $this->transactionDate;
     }
 
     /**
-     * @return array
+     * @return ?array
      */
-    public function getDetails(): array
+    public function getDetails(): ?array
     {
         return $this->details;
     }
 
     /**
-     * @return string
+     * @return ?string
      */
-    public function getCardNumber(): string
+    public function getCardNumber(): ?string
     {
         return $this->cardNumber;
     }
diff --git a/src/Webpay/TransaccionCompleta/Responses/TransactionCreateResponse.php b/src/Webpay/TransaccionCompleta/Responses/TransactionCreateResponse.php
index c17b0a44..ab5d9b41 100644
--- a/src/Webpay/TransaccionCompleta/Responses/TransactionCreateResponse.php
+++ b/src/Webpay/TransaccionCompleta/Responses/TransactionCreateResponse.php
@@ -6,7 +6,7 @@
 
 class TransactionCreateResponse
 {
-    public string $token;
+    public ?string $token;
 
     public function __construct(array $json)
     {
@@ -14,9 +14,9 @@ public function __construct(array $json)
     }
 
     /**
-     * @return string
+     * @return ?string
      */
-    public function getToken(): string
+    public function getToken(): ?string
     {
         return $this->token;
     }
diff --git a/src/Webpay/TransaccionCompleta/Responses/TransactionInstallmentsResponse.php b/src/Webpay/TransaccionCompleta/Responses/TransactionInstallmentsResponse.php
index 90807759..96a8eac0 100644
--- a/src/Webpay/TransaccionCompleta/Responses/TransactionInstallmentsResponse.php
+++ b/src/Webpay/TransaccionCompleta/Responses/TransactionInstallmentsResponse.php
@@ -7,8 +7,8 @@
 class TransactionInstallmentsResponse
 {
     public ?float $installmentsAmount;
-    public string $idQueryInstallments;
-    public array $deferredPeriods;
+    public ?string $idQueryInstallments;
+    public ?array $deferredPeriods;
 
     public function __construct(array $json)
     {
@@ -20,23 +20,23 @@ public function __construct(array $json)
     /**
      * @return ?float
      */
-    public function getInstallmentsAmount(): float
+    public function getInstallmentsAmount(): ?float
     {
         return $this->installmentsAmount;
     }
 
     /**
-     * @return string
+     * @return ?string
      */
-    public function getIdQueryInstallments(): string
+    public function getIdQueryInstallments(): ?string
     {
         return $this->idQueryInstallments;
     }
 
     /**
-     * @return array
+     * @return ?array
      */
-    public function getDeferredPeriods(): array
+    public function getDeferredPeriods(): ?array
     {
         return $this->deferredPeriods;
     }
diff --git a/src/Webpay/TransaccionCompleta/Responses/TransactionRefundResponse.php b/src/Webpay/TransaccionCompleta/Responses/TransactionRefundResponse.php
index 18d34cff..1ffb959f 100644
--- a/src/Webpay/TransaccionCompleta/Responses/TransactionRefundResponse.php
+++ b/src/Webpay/TransaccionCompleta/Responses/TransactionRefundResponse.php
@@ -6,7 +6,7 @@
 
 class TransactionRefundResponse
 {
-    public string $type;
+    public ?string $type;
     public ?string $authorizationCode;
     public ?string $authorizationDate;
     public ?float $nullifiedAmount;
@@ -24,9 +24,9 @@ public function __construct(array $json)
     }
 
     /**
-     * @return string
+     * @return ?string
      */
-    public function getType(): string
+    public function getType(): ?string
     {
         return $this->type;
     }