diff --git a/src/Controller/IndexController.php b/src/Controller/IndexController.php
index 02ebf42..0294c20 100644
--- a/src/Controller/IndexController.php
+++ b/src/Controller/IndexController.php
@@ -2,8 +2,9 @@
 
 namespace App\Controller;
 
-use App\Entity\QRCode\QRCode;
+use App\Entity\Input\QRCode\QRCode;
 use App\Form\Type\QRCodeType;
+use App\Service\DTO\QRCodeEntityConverter;
 use App\Service\QRCodeGeneratorInterface;
 use App\Service\QRCodeQROptionsProviderInterface;
 use Symfony\Bundle\FrameworkBundle\Controller\AbstractController;
@@ -12,7 +13,7 @@ use Symfony\Component\HttpFoundation\Response;
 use Symfony\Component\Routing\Attribute\Route;
 
 class IndexController extends AbstractController {
-    public function __construct(private readonly QRCodeQROptionsProviderInterface $qrCodeQROptionsFactory) {}
+    public function __construct(private readonly QRCodeQROptionsProviderInterface $qrCodeQROptionsFactory, private readonly QRCodeEntityConverter $codeEntityConverter) {}
     #[Route('/', name: 'homepage')]
     public function indexAction(
         Request $request,
@@ -33,7 +34,7 @@ class IndexController extends AbstractController {
                     do session, nicmene u takovehleho typu aplikace me to prijde naopak kontraproduktivni.
                     a zadani o tom mlci. Navic v pripade ze aplikace bude provozovana ve vice instancich
                     by se musela resit memcache, redis... */
-                $qrCodeImage = $qrCodeGenerator->generateQRCodeFromEntity($qrCode);
+                $qrCodeImage = $qrCodeGenerator->generateQRCodeFromEntity($this->codeEntityConverter->convert($qrCode));
                 $form = $this->createForm(QRCodeType::class, $this->createQrCodeEntity());
             }
         }
diff --git a/src/Entity/DTO/QRCode/QRCode.php b/src/Entity/DTO/QRCode/QRCode.php
new file mode 100644
index 0000000..e0c6cda
--- /dev/null
+++ b/src/Entity/DTO/QRCode/QRCode.php
@@ -0,0 +1,15 @@
+<?php
+declare(strict_types=1);
+
+namespace App\Entity\DTO\QRCode;
+
+readonly class QRCode {
+    public function __construct(
+        public string $iban,
+        public \DateTimeImmutable $dueDate,
+        public string $message,
+        public QRCodeMoney $money,
+        public QRCodeQROptions $qrOptions,
+        public ?QRCodePaymentIdentification $paymentIdentification)
+    { }
+}
diff --git a/src/Entity/DTO/QRCode/QRCodeMoney.php b/src/Entity/DTO/QRCode/QRCodeMoney.php
new file mode 100644
index 0000000..ecf63af
--- /dev/null
+++ b/src/Entity/DTO/QRCode/QRCodeMoney.php
@@ -0,0 +1,9 @@
+<?php
+declare(strict_types=1);
+
+namespace App\Entity\DTO\QRCode;
+
+readonly class QRCodeMoney
+{
+    public function __construct(public string $amount, public string $currency) { }
+}
diff --git a/src/Entity/DTO/QRCode/QRCodePaymentIdentification.php b/src/Entity/DTO/QRCode/QRCodePaymentIdentification.php
new file mode 100644
index 0000000..70fd241
--- /dev/null
+++ b/src/Entity/DTO/QRCode/QRCodePaymentIdentification.php
@@ -0,0 +1,9 @@
+<?php
+declare(strict_types=1);
+
+namespace App\Entity\DTO\QRCode;
+
+readonly class QRCodePaymentIdentification
+{
+    public function __construct(public ?string $variableSymbol, public ?string $specificSymbol, public ?string $constantSymbol) { }
+}
diff --git a/src/Entity/DTO/QRCode/QRCodeQROptions.php b/src/Entity/DTO/QRCode/QRCodeQROptions.php
new file mode 100644
index 0000000..6b20810
--- /dev/null
+++ b/src/Entity/DTO/QRCode/QRCodeQROptions.php
@@ -0,0 +1,11 @@
+<?php
+declare(strict_types=1);
+
+namespace App\Entity\DTO\QRCode;
+
+readonly class QRCodeQROptions
+{
+    public function __construct(public int $scale, public int $margin)
+    {
+    }
+}
diff --git a/src/Entity/QRCode/QRCode.php b/src/Entity/Input/QRCode/QRCode.php
similarity index 98%
rename from src/Entity/QRCode/QRCode.php
rename to src/Entity/Input/QRCode/QRCode.php
index 6ff8408..536e99d 100644
--- a/src/Entity/QRCode/QRCode.php
+++ b/src/Entity/Input/QRCode/QRCode.php
@@ -1,7 +1,7 @@
 <?php
 declare(strict_types=1);
 
-namespace App\Entity\QRCode;
+namespace App\Entity\Input\QRCode;
 use Symfony\Component\Validator\Constraints as Assert;
 
 /**
diff --git a/src/Entity/QRCode/QRCodeMoney.php b/src/Entity/Input/QRCode/QRCodeMoney.php
similarity index 97%
rename from src/Entity/QRCode/QRCodeMoney.php
rename to src/Entity/Input/QRCode/QRCodeMoney.php
index b822f07..00b9117 100644
--- a/src/Entity/QRCode/QRCodeMoney.php
+++ b/src/Entity/Input/QRCode/QRCodeMoney.php
@@ -1,7 +1,7 @@
 <?php
 declare(strict_types=1);
 
-namespace App\Entity\QRCode;
+namespace App\Entity\Input\QRCode;
 
 use App\Validator\Currency;
 use App\Validator\Money;
diff --git a/src/Entity/QRCode/QRCodePaymentIdentification.php b/src/Entity/Input/QRCode/QRCodePaymentIdentification.php
similarity index 94%
rename from src/Entity/QRCode/QRCodePaymentIdentification.php
rename to src/Entity/Input/QRCode/QRCodePaymentIdentification.php
index 5474120..6704cef 100644
--- a/src/Entity/QRCode/QRCodePaymentIdentification.php
+++ b/src/Entity/Input/QRCode/QRCodePaymentIdentification.php
@@ -1,10 +1,9 @@
 <?php
 declare(strict_types=1);
 
-namespace App\Entity\QRCode;
+namespace App\Entity\Input\QRCode;
 
 use App\Validator\BankPaymentIdentificationNumber;
-use Symfony\Component\Validator\Constraints as Assert;
 
 /**
  * Payment identification for QR code
diff --git a/src/Entity/QRCode/QRCodeQROptions.php b/src/Entity/Input/QRCode/QRCodeQROptions.php
similarity index 96%
rename from src/Entity/QRCode/QRCodeQROptions.php
rename to src/Entity/Input/QRCode/QRCodeQROptions.php
index ffa5888..2d9b3df 100644
--- a/src/Entity/QRCode/QRCodeQROptions.php
+++ b/src/Entity/Input/QRCode/QRCodeQROptions.php
@@ -1,7 +1,7 @@
 <?php
 declare(strict_types=1);
 
-namespace App\Entity\QRCode;
+namespace App\Entity\Input\QRCode;
 
 use Symfony\Component\Validator\Constraints as Assert;
 
diff --git a/src/Form/Type/QRCodeMoneyType.php b/src/Form/Type/QRCodeMoneyType.php
index 3b81c68..45e77d6 100644
--- a/src/Form/Type/QRCodeMoneyType.php
+++ b/src/Form/Type/QRCodeMoneyType.php
@@ -3,7 +3,7 @@ declare(strict_types=1);
 
 namespace App\Form\Type;
 
-use App\Entity\QRCode\QRCodeMoney;
+use App\Entity\Input\QRCode\QRCodeMoney;
 use App\Service\CurrencyListerInterface;
 use Symfony\Component\Form\AbstractType;
 use Symfony\Component\Form\Extension\Core\Type\ChoiceType;
diff --git a/src/Form/Type/QRCodePaymentIdentificationType.php b/src/Form/Type/QRCodePaymentIdentificationType.php
index 67caa9f..8bc49ad 100644
--- a/src/Form/Type/QRCodePaymentIdentificationType.php
+++ b/src/Form/Type/QRCodePaymentIdentificationType.php
@@ -3,7 +3,7 @@ declare(strict_types=1);
 
 namespace App\Form\Type;
 
-use App\Entity\QRCode\QRCodePaymentIdentification;
+use App\Entity\Input\QRCode\QRCodePaymentIdentification;
 use Symfony\Component\Form\AbstractType;
 use Symfony\Component\Form\Extension\Core\Type\IntegerType;
 use Symfony\Component\Form\FormBuilderInterface;
diff --git a/src/Form/Type/QRCodeType.php b/src/Form/Type/QRCodeType.php
index 32987af..0fb5fe2 100644
--- a/src/Form/Type/QRCodeType.php
+++ b/src/Form/Type/QRCodeType.php
@@ -4,7 +4,7 @@ declare(strict_types=1);
 namespace App\Form\Type;
 
 
-use App\Entity\QRCode\QRCode;
+use App\Entity\Input\QRCode\QRCode;
 use Symfony\Component\Form\AbstractType;
 use Symfony\Component\Form\Extension\Core\Type\DateType;
 use Symfony\Component\Form\Extension\Core\Type\SubmitType;
diff --git a/src/Service/CacheableQRCodeGeneratorInterface.php b/src/Service/CacheableQRCodeGeneratorInterface.php
index 9b80ac1..d3ae2a3 100644
--- a/src/Service/CacheableQRCodeGeneratorInterface.php
+++ b/src/Service/CacheableQRCodeGeneratorInterface.php
@@ -3,7 +3,7 @@ declare(strict_types=1);
 
 namespace App\Service;
 
-use App\Entity\QRCode\QRCode;
+use App\Entity\DTO\QRCode\QRCode;
 
 interface CacheableQRCodeGeneratorInterface extends QRCodeGeneratorInterface
 {
diff --git a/src/Service/CachedQRCodeGenerator.php b/src/Service/CachedQRCodeGenerator.php
index 9ad0041..6abf9ca 100644
--- a/src/Service/CachedQRCodeGenerator.php
+++ b/src/Service/CachedQRCodeGenerator.php
@@ -3,9 +3,8 @@ declare(strict_types=1);
 
 namespace App\Service;
 
-use App\Entity\QRCode\QRCode;
+use App\Entity\DTO\QRCode\QRCode;
 use Exception;
-use Psr\Cache\InvalidArgumentException;
 use Psr\Log\LoggerInterface;
 use Symfony\Contracts\Cache\CacheInterface;
 use Symfony\Contracts\Cache\ItemInterface;
diff --git a/src/Service/DTO/QRCodeEntityConverter.php b/src/Service/DTO/QRCodeEntityConverter.php
new file mode 100644
index 0000000..f1a2b4d
--- /dev/null
+++ b/src/Service/DTO/QRCodeEntityConverter.php
@@ -0,0 +1,58 @@
+<?php
+
+namespace App\Service\DTO;
+
+use App\Entity\DTO\QRCode\QRCode;
+use App\Entity\DTO\QRCode\QRCodeMoney;
+use App\Entity\DTO\QRCode\QRCodePaymentIdentification;
+use App\Entity\DTO\QRCode\QRCodeQROptions;
+use Symfony\Component\Validator\Validator\ValidatorInterface;
+
+final readonly class QRCodeEntityConverter
+{
+    public function __construct(private ValidatorInterface $validator) {
+
+    }
+
+    public function convert(\App\Entity\Input\QRCode\QRCode $code): QRCode {
+        if (count($this->validator->validate($code)) !== 0) {
+            throw new \InvalidArgumentException("QRCode entity is not valid");
+        }
+
+        return new QRCode(
+            $code->getIban() ?? throw new \InvalidArgumentException("iban not set"),
+            \DateTimeImmutable::createFromMutable($code->getDueDate() ?? throw new \InvalidArgumentException("due date not set")),
+            $code->getMessage() ?? throw new \InvalidArgumentException("message not set"),
+            $this->convertMoney($code->getMoney() ?? throw new \InvalidArgumentException("money not set")),
+            $this->convertCodeOptions($code->getCodeQROptions() ?? throw new \InvalidArgumentException("codeQROptions not set")),
+            $this->convertIdentification($code->getPaymentIdentification())
+        );
+    }
+
+    protected function convertMoney(\App\Entity\Input\QRCode\QRCodeMoney $money): QRCodeMoney
+    {
+        return new QRCodeMoney(
+            $money->getAmount() ?? throw new \InvalidArgumentException("amount not set"),
+            $money->getCurrency() ?? throw new \InvalidArgumentException("currency not set")
+        );
+    }
+
+    protected function convertCodeOptions(\App\Entity\Input\QRCode\QRCodeQROptions $options): QRCodeQROptions
+    {
+        return new QRCodeQROptions(
+            $options->getScale(),
+            $options->getMargin()
+        );
+    }
+
+    protected function convertIdentification(?\App\Entity\Input\QRCode\QRCodePaymentIdentification $ident): ?QRCodePaymentIdentification {
+        return match ($ident) {
+            null => null,
+            default => new QRCodePaymentIdentification(
+                $ident->getVariableSymbol(),
+                $ident->getSpecificSymbol(),
+                $ident->getConstantSymbol()
+            )
+        };
+    }
+}
diff --git a/src/Service/QRCodeGeneratorInterface.php b/src/Service/QRCodeGeneratorInterface.php
index b9ec81f..f674124 100644
--- a/src/Service/QRCodeGeneratorInterface.php
+++ b/src/Service/QRCodeGeneratorInterface.php
@@ -3,7 +3,7 @@ declare(strict_types=1);
 
 namespace App\Service;
 
-use App\Entity\QRCode\QRCode;
+use App\Entity\DTO\QRCode\QRCode;
 use App\Service\Exception\QRCodeGeneratorException;
 
 interface QRCodeGeneratorInterface
diff --git a/src/Service/QRCodeQROptionsDefaultProvider.php b/src/Service/QRCodeQROptionsDefaultProvider.php
index b52756c..44b5cf6 100644
--- a/src/Service/QRCodeQROptionsDefaultProvider.php
+++ b/src/Service/QRCodeQROptionsDefaultProvider.php
@@ -3,7 +3,7 @@ declare(strict_types=1);
 
 namespace App\Service;
 
-use App\Entity\QRCode\QRCodeQROptions;
+use App\Entity\Input\QRCode\QRCodeQROptions;
 
 readonly final class QRCodeQROptionsDefaultProvider implements QRCodeQROptionsProviderInterface {
     const DEFAULT_SCALE = 8;
diff --git a/src/Service/QRCodeQROptionsProviderInterface.php b/src/Service/QRCodeQROptionsProviderInterface.php
index f830c86..c9445dd 100644
--- a/src/Service/QRCodeQROptionsProviderInterface.php
+++ b/src/Service/QRCodeQROptionsProviderInterface.php
@@ -3,7 +3,7 @@ declare(strict_types=1);
 
 namespace App\Service;
 
-use App\Entity\QRCode\QRCodeQROptions;
+use App\Entity\Input\QRCode\QRCodeQROptions;
 
 interface QRCodeQROptionsProviderInterface {
     public function getDefault(): QRCodeQROptions;
diff --git a/src/Service/Remote/Edge/QRCodeEntityConverter.php b/src/Service/Remote/Edge/QRCodeEntityConverter.php
index 4fd76ce..44cb63c 100644
--- a/src/Service/Remote/Edge/QRCodeEntityConverter.php
+++ b/src/Service/Remote/Edge/QRCodeEntityConverter.php
@@ -3,10 +3,10 @@ declare(strict_types=1);
 
 namespace App\Service\Remote\Edge;
 
-use App\Entity\QRCode\QRCode;
-use App\Entity\QRCode\QRCodeMoney;
-use App\Entity\QRCode\QRCodePaymentIdentification;
-use App\Entity\QRCode\QRCodeQROptions;
+use App\Entity\DTO\QRCode\QRCode;
+use App\Entity\DTO\QRCode\QRCodeMoney;
+use App\Entity\DTO\QRCode\QRCodePaymentIdentification;
+use App\Entity\DTO\QRCode\QRCodeQROptions;
 use App\Entity\Remote\Usetreno\Edge\EdgeQRCode;
 use App\Entity\Remote\Usetreno\Edge\EdgeQRCodeMoney;
 use App\Entity\Remote\Usetreno\Edge\EdgeQRCodePaymentIdentification;
@@ -19,28 +19,28 @@ class QRCodeEntityConverter
 
     public function convert(QRCode $code): EdgeQRCode {
         return new EdgeQRCode(
-            $code->getIban() ?? throw new MissingParameterException("iban not set"),
-            $code->getDueDate() ? $code->getDueDate()->format('Y-m-d') : throw new MissingParameterException("due date not set"),
-            $code->getMessage() ?? throw new MissingParameterException("message not set"),
-            $this->convertMoney($code->getMoney() ?? throw new MissingParameterException("money not set")),
-            $this->convertCodeOptions($code->getCodeQROptions() ?? throw new MissingParameterException("codeQROptions not set")),
-            $this->convertIdentification($code->getPaymentIdentification())
+            $code->iban,
+            $code->dueDate->format('Y-m-d'),
+            $code->message,
+            $this->convertMoney($code->money),
+            $this->convertCodeOptions($code->qrOptions),
+            $this->convertIdentification($code->paymentIdentification)
         );
     }
 
     protected function convertMoney(QRCodeMoney $money): EdgeQRCodeMoney
     {
         return new EdgeQRCodeMoney(
-            $money->getAmount() ?? throw new MissingParameterException("amount not set"),
-            $money->getCurrency() ?? throw new MissingParameterException("currency not set")
+            $money->amount,
+            $money->currency
         );
     }
 
     protected function convertCodeOptions(QRCodeQROptions $options): EdgeQRCodeQROptions
     {
         return new EdgeQRCodeQROptions(
-            $options->getScale(),
-            $options->getMargin()
+            $options->scale,
+            $options->margin
         );
     }
 
@@ -53,9 +53,9 @@ class QRCodeEntityConverter
                 "0"
             ),
             default => new EdgeQRCodePaymentIdentification(
-                $ident->getVariableSymbol() ?? "0",
-                $ident->getSpecificSymbol() ?? "0",
-                $ident->getConstantSymbol() ?? "0"
+                $ident->variableSymbol ?? "0",
+                $ident->specificSymbol ?? "0",
+                $ident->constantSymbol ?? "0"
             )
         };
     }
diff --git a/src/Service/Remote/UsetrenoQRCodeProvider.php b/src/Service/Remote/UsetrenoQRCodeProvider.php
index 379beb8..fe3d6bf 100644
--- a/src/Service/Remote/UsetrenoQRCodeProvider.php
+++ b/src/Service/Remote/UsetrenoQRCodeProvider.php
@@ -3,7 +3,7 @@ declare(strict_types=1);
 
 namespace App\Service\Remote;
 
-use App\Entity\QRCode\QRCode;
+use App\Entity\DTO\QRCode\QRCode;
 use App\Service\CacheableQRCodeGeneratorInterface;
 use App\Service\Remote\Edge\QRCodeEntityConverter;
 use App\Service\Remote\Exception\UsetrenoQRCodeException;
diff --git a/src/Service/StubQRCodeGenerator.php b/src/Service/StubQRCodeGenerator.php
index 8dfc664..1279b00 100644
--- a/src/Service/StubQRCodeGenerator.php
+++ b/src/Service/StubQRCodeGenerator.php
@@ -3,7 +3,7 @@ declare(strict_types=1);
 
 namespace App\Service;
 
-use App\Entity\QRCode\QRCode;
+use App\Entity\DTO\QRCode\QRCode;
 
 readonly final class StubQRCodeGenerator implements QRCodeGeneratorInterface
 {
diff --git a/tests/Service/Remote/UsetrenoQRCodeProviderTest.php b/tests/Service/Remote/UsetrenoQRCodeProviderTest.php
index 517f9aa..dd7e602 100644
--- a/tests/Service/Remote/UsetrenoQRCodeProviderTest.php
+++ b/tests/Service/Remote/UsetrenoQRCodeProviderTest.php
@@ -2,7 +2,10 @@
 
 namespace App\Tests\Service\Remote;
 
-use App\Entity\QRCode\QRCode;
+use App\Entity\DTO\QRCode\QRCode;
+use App\Entity\DTO\QRCode\QRCodeMoney;
+use App\Entity\DTO\QRCode\QRCodePaymentIdentification;
+use App\Entity\DTO\QRCode\QRCodeQROptions;
 use App\Entity\Remote\Usetreno\Edge\EdgeQRCode;
 use App\Entity\Remote\Usetreno\Edge\EdgeQRCodeMoney;
 use App\Entity\Remote\Usetreno\Edge\EdgeQRCodePaymentIdentification;
@@ -30,57 +33,24 @@ class UsetrenoQRCodeProviderTest extends TestCase
             ]
         ];
 
-        $edgeEntity = new EdgeQRCode(
-            "CZ0000",
-            (new \DateTime("now"))->format('Y-m-d'),
-            "foo",
-            new EdgeQRCodeMoney(
-                100,
-                "CZK"
-            ),
-            new EdgeQRCodeQROptions(
-                1,
-                1
-            ),
-            new EdgeQRCodePaymentIdentification(
-                "0", "0", "0"
-            )
-        );
+        [$edgeEntity, $qrCodeEntity] = $this->createQRCodeEntityPair();
 
-        $entity = $this->createMock(QRCode::class);
-
-        $qrCodeProvider = $this->createQRCodeProvider($successRequest, 200, $edgeEntity, $entity);
-        $data = $qrCodeProvider->generateQRCodeFromEntity($entity);
+        $qrCodeProvider = $this->createQRCodeProvider($successRequest, 200, $edgeEntity, $qrCodeEntity);
+        $data = $qrCodeProvider->generateQRCodeFromEntity($qrCodeEntity);
         $this->assertEquals($base64Image, $data);
     }
 
     public function testFailureRequest() {
         $this->expectException(QRCodeGeneratorException::class);
+
         $failureRequest = [
             "error" => "internal server error",
         ];
 
-        $edgeEntity = new EdgeQRCode(
-            "CZ0000",
-            (new \DateTime("now"))->format('Y-m-d'),
-            "foo",
-            new EdgeQRCodeMoney(
-                100,
-                "CZK"
-            ),
-            new EdgeQRCodeQROptions(
-                1,
-                1
-            ),
-            new EdgeQRCodePaymentIdentification(
-                "0", "0", "0"
-            )
-        );
+        [$edgeEntity, $qrCodeEntity] = $this->createQRCodeEntityPair();
 
-        $entity = $this->createMock(QRCode::class);
-
-        $qrCodeProvider = $this->createQRCodeProvider($failureRequest, 500, $edgeEntity, $entity);
-        $data = $qrCodeProvider->generateQRCodeFromEntity($entity);
+        $qrCodeProvider = $this->createQRCodeProvider($failureRequest, 500, $edgeEntity, $qrCodeEntity);
+        $data = $qrCodeProvider->generateQRCodeFromEntity($qrCodeEntity);
         $this->assertEquals($failureRequest["data"]["base64Data"], $data);
     }
 
@@ -107,4 +77,42 @@ class UsetrenoQRCodeProviderTest extends TestCase
 
         return new UsetrenoQRCodeProvider($this->getLogger(), $mock, $converterMock);
     }
+
+    protected function createQRCodeEntityPair() {
+        $edgeEntity = new EdgeQRCode(
+            "CZ0000",
+            (new \DateTime("now"))->format('Y-m-d'),
+            "foo",
+            new EdgeQRCodeMoney(
+                100,
+                "CZK"
+            ),
+            new EdgeQRCodeQROptions(
+                1,
+                1
+            ),
+            new EdgeQRCodePaymentIdentification(
+                "0", "0", "0"
+            )
+        );
+
+        $qrCodeEntity = new QRCode(
+            "CZ0000",
+            new \DateTimeImmutable("now"),
+            "foo",
+            new QRCodeMoney(
+                100,
+                "CZK"
+            ),
+            new QRCodeQROptions(
+                1,
+                1
+            ),
+            new QRCodePaymentIdentification(
+                "0", "0", "0"
+            )
+        );
+
+        return [$edgeEntity, $qrCodeEntity];
+    }
 }