ENGCOM-7796: #26107: Exception message on cart with no shipment items #28904

 - Merge Pull Request #28904 from michalderlatka/magento2:26107_virtual_product_exception_message
 - Merged commits:
   1. 1091a30
   2. c8c4e06
   3. 77bd613

Author: magento-engcom-team

app/code/Magento/QuoteGraphQl/Model/Cart/AssignShippingAddressToCart.php

@@ -16,7 +16,7 @@
 use Magento\Quote\Model\ShippingAddressManagementInterface;
 
 /**
- * Assign shipping address to cart
+ * Assigning shipping address to cart
  */
 class AssignShippingAddressToCart
 {
@@ -49,7 +49,14 @@ public function execute(
         try {
             $this->shippingAddressManagement->assign($cart->getId(), $shippingAddress);
         } catch (NoSuchEntityException $e) {
-            throw new GraphQlNoSuchEntityException(__($e->getMessage()), $e);
+            if ($cart->getIsVirtual()) {
+                throw new GraphQlNoSuchEntityException(
+                    __('Shipping address is not allowed on cart: cart contains no items for shipment.'),
+                    $e
+                );
+            } else {
+                throw new GraphQlNoSuchEntityException(__($e->getMessage()), $e);
+            }
         } catch (InputException $e) {
             throw new GraphQlInputException(__($e->getMessage()), $e);
         }

dev/tests/api-functional/testsuite/Magento/GraphQl/Quote/Customer/SetShippingAddressOnCartTest.php

@@ -149,7 +149,7 @@ public function testSetNewShippingAddressOnCartWithSimpleProduct()
     public function testSetNewShippingAddressOnCartWithVirtualProduct()
     {
         $this->expectException(\Exception::class);
-        $this->expectExceptionMessage('The Cart includes virtual product(s) only, so a shipping address is not used.');
+        $this->expectExceptionMessage('Shipping address is not allowed on cart: cart contains no items for shipment.');
 
         $maskedQuoteId = $this->getMaskedQuoteIdByReservedOrderId->execute('test_quote');
 

dev/tests/api-functional/testsuite/Magento/GraphQl/Quote/Guest/SetShippingAddressOnCartTest.php

@@ -97,7 +97,7 @@ public function testSetNewShippingAddressOnCartWithSimpleProduct()
     public function testSetNewShippingAddressOnCartWithVirtualProduct()
     {
         $this->expectException(\Exception::class);
-        $this->expectExceptionMessage('The Cart includes virtual product(s) only, so a shipping address is not used.');
+        $this->expectExceptionMessage('Shipping address is not allowed on cart: cart contains no items for shipment.');
 
         $maskedQuoteId = $this->getMaskedQuoteIdByReservedOrderId->execute('test_quote');