diff --git a/app/code/Magento/CustomerGraphQl/Model/Resolver/CreateCustomer.php b/app/code/Magento/CustomerGraphQl/Model/Resolver/CreateCustomer.php
index a42afb49db88..e12c636f0edf 100644
--- a/app/code/Magento/CustomerGraphQl/Model/Resolver/CreateCustomer.php
+++ b/app/code/Magento/CustomerGraphQl/Model/Resolver/CreateCustomer.php
@@ -51,7 +51,7 @@ public function resolve(
         array $value = null,
         array $args = null
     ) {
-        if (!isset($args['input']) || !is_array($args['input']) || empty($args['input'])) {
+        if (empty($args['input']) || !is_array($args['input'])) {
             throw new GraphQlInputException(__('"input" value should be specified'));
         }
 
diff --git a/app/code/Magento/CustomerGraphQl/Model/Resolver/CreateCustomerAddress.php b/app/code/Magento/CustomerGraphQl/Model/Resolver/CreateCustomerAddress.php
index fd8122de961e..2e157b9bd0ff 100644
--- a/app/code/Magento/CustomerGraphQl/Model/Resolver/CreateCustomerAddress.php
+++ b/app/code/Magento/CustomerGraphQl/Model/Resolver/CreateCustomerAddress.php
@@ -60,7 +60,7 @@ public function resolve(
         array $value = null,
         array $args = null
     ) {
-        if (!isset($args['input']) || !is_array($args['input']) || empty($args['input'])) {
+        if (empty($args['input']) || !is_array($args['input'])) {
             throw new GraphQlInputException(__('"input" value should be specified'));
         }
 
diff --git a/app/code/Magento/CustomerGraphQl/Model/Resolver/DeleteCustomerAddress.php b/app/code/Magento/CustomerGraphQl/Model/Resolver/DeleteCustomerAddress.php
index 08e82d930f26..0c32b298b12d 100644
--- a/app/code/Magento/CustomerGraphQl/Model/Resolver/DeleteCustomerAddress.php
+++ b/app/code/Magento/CustomerGraphQl/Model/Resolver/DeleteCustomerAddress.php
@@ -60,7 +60,7 @@ public function resolve(
         array $value = null,
         array $args = null
     ) {
-        if (!isset($args['id']) || empty($args['id'])) {
+        if (empty($args['id'])) {
             throw new GraphQlInputException(__('Address "id" value should be specified'));
         }
 
diff --git a/app/code/Magento/CustomerGraphQl/Model/Resolver/GenerateCustomerToken.php b/app/code/Magento/CustomerGraphQl/Model/Resolver/GenerateCustomerToken.php
index 2a7cb8a734a5..4de452900e7e 100644
--- a/app/code/Magento/CustomerGraphQl/Model/Resolver/GenerateCustomerToken.php
+++ b/app/code/Magento/CustomerGraphQl/Model/Resolver/GenerateCustomerToken.php
@@ -44,11 +44,11 @@ public function resolve(
         array $value = null,
         array $args = null
     ) {
-        if (!isset($args['email']) || empty($args['email'])) {
+        if (empty($args['email'])) {
             throw new GraphQlInputException(__('Specify the "email" value.'));
         }
 
-        if (!isset($args['password']) || empty($args['password'])) {
+        if (empty($args['password'])) {
             throw new GraphQlInputException(__('Specify the "password" value.'));
         }
 
diff --git a/app/code/Magento/CustomerGraphQl/Model/Resolver/IsEmailAvailable.php b/app/code/Magento/CustomerGraphQl/Model/Resolver/IsEmailAvailable.php
index c88514687c66..91298b9e3150 100644
--- a/app/code/Magento/CustomerGraphQl/Model/Resolver/IsEmailAvailable.php
+++ b/app/code/Magento/CustomerGraphQl/Model/Resolver/IsEmailAvailable.php
@@ -52,7 +52,7 @@ public function resolve(
         array $value = null,
         array $args = null
     ) {
-        if (!isset($args['email']) || empty($args['email'])) {
+        if (empty($args['email'])) {
             throw new GraphQlInputException(__('Email must be specified'));
         }
 
diff --git a/app/code/Magento/CustomerGraphQl/Model/Resolver/UpdateCustomer.php b/app/code/Magento/CustomerGraphQl/Model/Resolver/UpdateCustomer.php
index 7e06a2a063b4..b3db1de3ded0 100644
--- a/app/code/Magento/CustomerGraphQl/Model/Resolver/UpdateCustomer.php
+++ b/app/code/Magento/CustomerGraphQl/Model/Resolver/UpdateCustomer.php
@@ -60,7 +60,7 @@ public function resolve(
         array $value = null,
         array $args = null
     ) {
-        if (!isset($args['input']) || !is_array($args['input']) || empty($args['input'])) {
+        if (empty($args['input']) || !is_array($args['input'])) {
             throw new GraphQlInputException(__('"input" value should be specified'));
         }
 
diff --git a/app/code/Magento/CustomerGraphQl/Model/Resolver/UpdateCustomerAddress.php b/app/code/Magento/CustomerGraphQl/Model/Resolver/UpdateCustomerAddress.php
index 36d7d6619931..5e41420eef1c 100644
--- a/app/code/Magento/CustomerGraphQl/Model/Resolver/UpdateCustomerAddress.php
+++ b/app/code/Magento/CustomerGraphQl/Model/Resolver/UpdateCustomerAddress.php
@@ -69,11 +69,11 @@ public function resolve(
         array $value = null,
         array $args = null
     ) {
-        if (!isset($args['id']) || empty($args['id'])) {
+        if (empty($args['id'])) {
             throw new GraphQlInputException(__('Address "id" value must be specified'));
         }
 
-        if (!isset($args['input']) || !is_array($args['input']) || empty($args['input'])) {
+        if (empty($args['input']) || !is_array($args['input'])) {
             throw new GraphQlInputException(__('"input" value must be specified'));
         }
 
diff --git a/app/code/Magento/QuoteGraphQl/Model/Resolver/AddSimpleProductsToCart.php b/app/code/Magento/QuoteGraphQl/Model/Resolver/AddSimpleProductsToCart.php
index cfae0e126780..9876938c08bc 100644
--- a/app/code/Magento/QuoteGraphQl/Model/Resolver/AddSimpleProductsToCart.php
+++ b/app/code/Magento/QuoteGraphQl/Model/Resolver/AddSimpleProductsToCart.php
@@ -47,12 +47,12 @@ public function __construct(
      */
     public function resolve(Field $field, $context, ResolveInfo $info, array $value = null, array $args = null)
     {
-        if (!isset($args['input']['cart_id']) || empty($args['input']['cart_id'])) {
+        if (empty($args['input']['cart_id'])) {
             throw new GraphQlInputException(__('Required parameter "cart_id" is missing'));
         }
         $maskedCartId = $args['input']['cart_id'];
 
-        if (!isset($args['input']['cart_items']) || empty($args['input']['cart_items'])
+        if (empty($args['input']['cart_items'])
             || !is_array($args['input']['cart_items'])
         ) {
             throw new GraphQlInputException(__('Required parameter "cart_items" is missing'));
diff --git a/app/code/Magento/QuoteGraphQl/Model/Resolver/ApplyCouponToCart.php b/app/code/Magento/QuoteGraphQl/Model/Resolver/ApplyCouponToCart.php
index 4de046468118..84d2183eeac7 100644
--- a/app/code/Magento/QuoteGraphQl/Model/Resolver/ApplyCouponToCart.php
+++ b/app/code/Magento/QuoteGraphQl/Model/Resolver/ApplyCouponToCart.php
@@ -50,12 +50,12 @@ public function __construct(
      */
     public function resolve(Field $field, $context, ResolveInfo $info, array $value = null, array $args = null)
     {
-        if (!isset($args['input']['cart_id']) || empty($args['input']['cart_id'])) {
+        if (empty($args['input']['cart_id'])) {
             throw new GraphQlInputException(__('Required parameter "cart_id" is missing'));
         }
         $maskedCartId = $args['input']['cart_id'];
 
-        if (!isset($args['input']['coupon_code']) || empty($args['input']['coupon_code'])) {
+        if (empty($args['input']['coupon_code'])) {
             throw new GraphQlInputException(__('Required parameter "coupon_code" is missing'));
         }
         $couponCode = $args['input']['coupon_code'];
diff --git a/app/code/Magento/QuoteGraphQl/Model/Resolver/Cart.php b/app/code/Magento/QuoteGraphQl/Model/Resolver/Cart.php
index db74b1fa4174..16fd639685b8 100644
--- a/app/code/Magento/QuoteGraphQl/Model/Resolver/Cart.php
+++ b/app/code/Magento/QuoteGraphQl/Model/Resolver/Cart.php
@@ -37,7 +37,7 @@ public function __construct(
      */
     public function resolve(Field $field, $context, ResolveInfo $info, array $value = null, array $args = null)
     {
-        if (!isset($args['cart_id']) || empty($args['cart_id'])) {
+        if (empty($args['cart_id'])) {
             throw new GraphQlInputException(__('Required parameter "cart_id" is missing'));
         }
         $maskedCartId = $args['cart_id'];
diff --git a/app/code/Magento/QuoteGraphQl/Model/Resolver/PlaceOrder.php b/app/code/Magento/QuoteGraphQl/Model/Resolver/PlaceOrder.php
index 1672474bb3dd..63447ab7677d 100644
--- a/app/code/Magento/QuoteGraphQl/Model/Resolver/PlaceOrder.php
+++ b/app/code/Magento/QuoteGraphQl/Model/Resolver/PlaceOrder.php
@@ -58,7 +58,7 @@ public function __construct(
      */
     public function resolve(Field $field, $context, ResolveInfo $info, array $value = null, array $args = null)
     {
-        if (!isset($args['input']['cart_id']) || empty($args['input']['cart_id'])) {
+        if (empty($args['input']['cart_id'])) {
             throw new GraphQlInputException(__('Required parameter "cart_id" is missing'));
         }
         $maskedCartId = $args['input']['cart_id'];
diff --git a/app/code/Magento/QuoteGraphQl/Model/Resolver/RemoveCouponFromCart.php b/app/code/Magento/QuoteGraphQl/Model/Resolver/RemoveCouponFromCart.php
index f81ea3020d3d..291dd9c507eb 100644
--- a/app/code/Magento/QuoteGraphQl/Model/Resolver/RemoveCouponFromCart.php
+++ b/app/code/Magento/QuoteGraphQl/Model/Resolver/RemoveCouponFromCart.php
@@ -50,7 +50,7 @@ public function __construct(
      */
     public function resolve(Field $field, $context, ResolveInfo $info, array $value = null, array $args = null)
     {
-        if (!isset($args['input']['cart_id']) || empty($args['input']['cart_id'])) {
+        if (empty($args['input']['cart_id'])) {
             throw new GraphQlInputException(__('Required parameter "cart_id" is missing'));
         }
         $maskedCartId = $args['input']['cart_id'];
diff --git a/app/code/Magento/QuoteGraphQl/Model/Resolver/RemoveItemFromCart.php b/app/code/Magento/QuoteGraphQl/Model/Resolver/RemoveItemFromCart.php
index 63e66f121f55..0dc7274bd474 100644
--- a/app/code/Magento/QuoteGraphQl/Model/Resolver/RemoveItemFromCart.php
+++ b/app/code/Magento/QuoteGraphQl/Model/Resolver/RemoveItemFromCart.php
@@ -49,12 +49,12 @@ public function __construct(
      */
     public function resolve(Field $field, $context, ResolveInfo $info, array $value = null, array $args = null)
     {
-        if (!isset($args['input']['cart_id']) || empty($args['input']['cart_id'])) {
+        if (empty($args['input']['cart_id'])) {
             throw new GraphQlInputException(__('Required parameter "cart_id" is missing.'));
         }
         $maskedCartId = $args['input']['cart_id'];
 
-        if (!isset($args['input']['cart_item_id']) || empty($args['input']['cart_item_id'])) {
+        if (empty($args['input']['cart_item_id'])) {
             throw new GraphQlInputException(__('Required parameter "cart_item_id" is missing.'));
         }
         $itemId = $args['input']['cart_item_id'];
diff --git a/app/code/Magento/QuoteGraphQl/Model/Resolver/SetBillingAddressOnCart.php b/app/code/Magento/QuoteGraphQl/Model/Resolver/SetBillingAddressOnCart.php
index f7c9a4b0697b..9374f4504e43 100644
--- a/app/code/Magento/QuoteGraphQl/Model/Resolver/SetBillingAddressOnCart.php
+++ b/app/code/Magento/QuoteGraphQl/Model/Resolver/SetBillingAddressOnCart.php
@@ -46,12 +46,12 @@ public function __construct(
      */
     public function resolve(Field $field, $context, ResolveInfo $info, array $value = null, array $args = null)
     {
-        if (!isset($args['input']['cart_id']) || empty($args['input']['cart_id'])) {
+        if (empty($args['input']['cart_id'])) {
             throw new GraphQlInputException(__('Required parameter "cart_id" is missing'));
         }
         $maskedCartId = $args['input']['cart_id'];
 
-        if (!isset($args['input']['billing_address']) || empty($args['input']['billing_address'])) {
+        if (empty($args['input']['billing_address'])) {
             throw new GraphQlInputException(__('Required parameter "billing_address" is missing'));
         }
         $billingAddress = $args['input']['billing_address'];
diff --git a/app/code/Magento/QuoteGraphQl/Model/Resolver/SetGuestEmailOnCart.php b/app/code/Magento/QuoteGraphQl/Model/Resolver/SetGuestEmailOnCart.php
index d621057348b5..83c8ecd011d1 100644
--- a/app/code/Magento/QuoteGraphQl/Model/Resolver/SetGuestEmailOnCart.php
+++ b/app/code/Magento/QuoteGraphQl/Model/Resolver/SetGuestEmailOnCart.php
@@ -57,12 +57,12 @@ public function __construct(
      */
     public function resolve(Field $field, $context, ResolveInfo $info, array $value = null, array $args = null)
     {
-        if (!isset($args['input']['cart_id']) || empty($args['input']['cart_id'])) {
+        if (empty($args['input']['cart_id'])) {
             throw new GraphQlInputException(__('Required parameter "cart_id" is missing'));
         }
         $maskedCartId = $args['input']['cart_id'];
 
-        if (!isset($args['input']['email']) || empty($args['input']['email'])) {
+        if (empty($args['input']['email'])) {
             throw new GraphQlInputException(__('Required parameter "email" is missing'));
         }
 
diff --git a/app/code/Magento/QuoteGraphQl/Model/Resolver/SetPaymentMethodOnCart.php b/app/code/Magento/QuoteGraphQl/Model/Resolver/SetPaymentMethodOnCart.php
index 5d8f2ba62c77..3adc17f538f3 100644
--- a/app/code/Magento/QuoteGraphQl/Model/Resolver/SetPaymentMethodOnCart.php
+++ b/app/code/Magento/QuoteGraphQl/Model/Resolver/SetPaymentMethodOnCart.php
@@ -70,12 +70,12 @@ public function __construct(
      */
     public function resolve(Field $field, $context, ResolveInfo $info, array $value = null, array $args = null)
     {
-        if (!isset($args['input']['cart_id']) || empty($args['input']['cart_id'])) {
+        if (empty($args['input']['cart_id'])) {
             throw new GraphQlInputException(__('Required parameter "cart_id" is missing.'));
         }
         $maskedCartId = $args['input']['cart_id'];
 
-        if (!isset($args['input']['payment_method']['code']) || empty($args['input']['payment_method']['code'])) {
+        if (empty($args['input']['payment_method']['code'])) {
             throw new GraphQlInputException(__('Required parameter "code" for "payment_method" is missing.'));
         }
         $paymentMethodCode = $args['input']['payment_method']['code'];
diff --git a/app/code/Magento/QuoteGraphQl/Model/Resolver/SetShippingAddressesOnCart.php b/app/code/Magento/QuoteGraphQl/Model/Resolver/SetShippingAddressesOnCart.php
index c3e1d371fe6a..8589c93c6370 100644
--- a/app/code/Magento/QuoteGraphQl/Model/Resolver/SetShippingAddressesOnCart.php
+++ b/app/code/Magento/QuoteGraphQl/Model/Resolver/SetShippingAddressesOnCart.php
@@ -46,12 +46,12 @@ public function __construct(
      */
     public function resolve(Field $field, $context, ResolveInfo $info, array $value = null, array $args = null)
     {
-        if (!isset($args['input']['cart_id']) || empty($args['input']['cart_id'])) {
+        if (empty($args['input']['cart_id'])) {
             throw new GraphQlInputException(__('Required parameter "cart_id" is missing'));
         }
         $maskedCartId = $args['input']['cart_id'];
 
-        if (!isset($args['input']['shipping_addresses']) || empty($args['input']['shipping_addresses'])) {
+        if (empty($args['input']['shipping_addresses'])) {
             throw new GraphQlInputException(__('Required parameter "shipping_addresses" is missing'));
         }
         $shippingAddresses = $args['input']['shipping_addresses'];
diff --git a/app/code/Magento/QuoteGraphQl/Model/Resolver/SetShippingMethodsOnCart.php b/app/code/Magento/QuoteGraphQl/Model/Resolver/SetShippingMethodsOnCart.php
index e69ba47e7adf..3be271b82a67 100644
--- a/app/code/Magento/QuoteGraphQl/Model/Resolver/SetShippingMethodsOnCart.php
+++ b/app/code/Magento/QuoteGraphQl/Model/Resolver/SetShippingMethodsOnCart.php
@@ -46,12 +46,12 @@ public function __construct(
      */
     public function resolve(Field $field, $context, ResolveInfo $info, array $value = null, array $args = null)
     {
-        if (!isset($args['input']['cart_id']) || empty($args['input']['cart_id'])) {
+        if (empty($args['input']['cart_id'])) {
             throw new GraphQlInputException(__('Required parameter "cart_id" is missing'));
         }
         $maskedCartId = $args['input']['cart_id'];
 
-        if (!isset($args['input']['shipping_methods']) || empty($args['input']['shipping_methods'])) {
+        if (empty($args['input']['shipping_methods'])) {
             throw new GraphQlInputException(__('Required parameter "shipping_methods" is missing'));
         }
         $shippingMethods = $args['input']['shipping_methods'];
diff --git a/app/code/Magento/QuoteGraphQl/Model/Resolver/UpdateCartItems.php b/app/code/Magento/QuoteGraphQl/Model/Resolver/UpdateCartItems.php
index b76c9159d859..fa115db144e3 100644
--- a/app/code/Magento/QuoteGraphQl/Model/Resolver/UpdateCartItems.php
+++ b/app/code/Magento/QuoteGraphQl/Model/Resolver/UpdateCartItems.php
@@ -51,12 +51,12 @@ public function __construct(
      */
     public function resolve(Field $field, $context, ResolveInfo $info, array $value = null, array $args = null)
     {
-        if (!isset($args['input']['cart_id']) || empty($args['input']['cart_id'])) {
+        if (empty($args['input']['cart_id'])) {
             throw new GraphQlInputException(__('Required parameter "cart_id" is missing.'));
         }
         $maskedCartId = $args['input']['cart_id'];
 
-        if (!isset($args['input']['cart_items']) || empty($args['input']['cart_items'])
+        if (empty($args['input']['cart_items'])
             || !is_array($args['input']['cart_items'])
         ) {
             throw new GraphQlInputException(__('Required parameter "cart_items" is missing.'));
@@ -91,7 +91,7 @@ public function resolve(Field $field, $context, ResolveInfo $info, array $value
     private function processCartItems(Quote $cart, array $items): void
     {
         foreach ($items as $item) {
-            if (!isset($item['cart_item_id']) || empty($item['cart_item_id'])) {
+            if (empty($item['cart_item_id'])) {
                 throw new GraphQlInputException(__('Required parameter "cart_item_id" for "cart_items" is missing.'));
             }
             $itemId = $item['cart_item_id'];