diff --git a/example/Transaction/example-authorize-retry.php b/example/Transaction/example-authorize-retry.php
new file mode 100644
index 0000000..c7112fc
--- /dev/null
+++ b/example/Transaction/example-authorize-retry.php
@@ -0,0 +1,67 @@
+<?php declare(strict_types=1);
+
+use Ticketpark\SaferpayJson\Request\Exception\SaferpayErrorException;
+use Ticketpark\SaferpayJson\Request\RequestConfig;
+use Ticketpark\SaferpayJson\Request\Transaction\AuthorizeRequest;
+
+require_once __DIR__ . '/../../vendor/autoload.php';
+require_once __DIR__ . '/../credentials.php';
+
+// A token you received after initializing a transaction (see example-initialize.php)
+
+$token = 'xxx';
+
+// The request ID you received after the first authorize request fails with a Behavior of RETRY or RETRY_LATER
+
+$requestId = 'your_request_id';
+
+// retryIndicator is set to 1 to indicate that this is a retry (see SaferpayJson/Request/RequestConfig.php)
+
+$retryIndicator = 1;
+
+// -----------------------------
+// Step 1:
+// Prepare the authorize request
+// See https://saferpay.github.io/jsonapi/#Payment_v1_Transaction_Authorize
+//
+// Note: The RequestConfig is created with a requestId and retryIndicator to indicate that this is a retry
+// (see https://docs.saferpay.com/home/integration-guide/licences-and-interfaces/error-handling#the-requestid-and-retryindicator)
+
+$requestConfig = new RequestConfig(
+    $apiKey,
+    $apiSecret,
+    $customerId,
+    true,
+    $requestId,
+    $retryIndicator
+);
+
+// -----------------------------
+// Step 2:
+// Create the request with required data
+
+$authorizeRequest = new AuthorizeRequest(
+    $requestConfig,
+    $token,
+);
+
+// Note: More data can be provided to InitializeRequest with setters,
+// for example: $authorizeRequest->setCondition()
+// See Saferpay documentation for available options.
+
+// -----------------------------
+// Step 3:
+// Execute and check for successful response
+
+try {
+    $response = $authorizeRequest->execute();
+} catch (SaferpayErrorException $e) {
+    die ($e->getErrorResponse()->getErrorMessage());
+}
+
+echo 'The transaction has been successful! Transaction id: ' . $response->getTransaction()->getId() . "\n";
+
+// -----------------------------
+// Step 4:
+// Capture the transaction to get the cash flowing.
+// see: example-capture.php
diff --git a/lib/SaferpayJson/Request/Container/RequestHeader.php b/lib/SaferpayJson/Request/Container/RequestHeader.php
index 5dd948c..dc28e34 100644
--- a/lib/SaferpayJson/Request/Container/RequestHeader.php
+++ b/lib/SaferpayJson/Request/Container/RequestHeader.php
@@ -5,6 +5,7 @@
 namespace Ticketpark\SaferpayJson\Request\Container;
 
 use JMS\Serializer\Annotation\SerializedName;
+use Ticketpark\SaferpayJson\Request\RequestConfig;
 
 final class RequestHeader
 {
@@ -33,8 +34,11 @@ final class RequestHeader
      */
     private ?ClientInfo $clientInfo = null;
 
-    public function __construct(string $customerId, string $requestId = null, int $retryIndicator = 0)
-    {
+    public function __construct(
+        string $customerId,
+        string $requestId = null,
+        int    $retryIndicator = RequestConfig::MIN_RETRY_INDICATOR
+    ) {
         $this->customerId = $customerId;
         $this->requestId = $requestId;
         $this->retryIndicator = $retryIndicator;
diff --git a/lib/SaferpayJson/Request/Request.php b/lib/SaferpayJson/Request/Request.php
index d336945..b0a9064 100644
--- a/lib/SaferpayJson/Request/Request.php
+++ b/lib/SaferpayJson/Request/Request.php
@@ -50,7 +50,9 @@ public function __construct(RequestConfig $requestConfig)
     public function getRequestHeader(): RequestHeader
     {
         return new RequestHeader(
-            $this->requestConfig->getCustomerId()
+            $this->requestConfig->getCustomerId(),
+            $this->requestConfig->getRequestId(),
+            $this->requestConfig->getRetryIndicator()
         );
     }
 
diff --git a/lib/SaferpayJson/Request/RequestConfig.php b/lib/SaferpayJson/Request/RequestConfig.php
index e482ee5..1267312 100644
--- a/lib/SaferpayJson/Request/RequestConfig.php
+++ b/lib/SaferpayJson/Request/RequestConfig.php
@@ -5,21 +5,45 @@
 namespace Ticketpark\SaferpayJson\Request;
 
 use GuzzleHttp\Client;
+use InvalidArgumentException;
 
 final class RequestConfig
 {
+    public const MIN_RETRY_INDICATOR = 0;
+    public const MAX_RETRY_INDICATOR = 9;
+
     private string $apiKey;
     private string $apiSecret;
     private string $customerId;
     private bool $test;
     private ?Client $client = null;
+    private ?string $requestId;
+    private int $retryIndicator;
 
-    public function __construct(string $apiKey, string $apiSecret, string $customerId, bool $test = false)
-    {
+    public function __construct(
+        string  $apiKey,
+        string  $apiSecret,
+        string  $customerId,
+        bool    $test = false,
+        ?string $requestId = null,
+        int     $retryIndicator = 0
+    ) {
         $this->apiKey = $apiKey;
         $this->apiSecret = $apiSecret;
         $this->customerId = $customerId;
         $this->test = $test;
+
+        if ($retryIndicator < self::MIN_RETRY_INDICATOR || $retryIndicator > self::MAX_RETRY_INDICATOR) {
+            throw new InvalidArgumentException('Retry indicator range: inclusive between '
+                . self::MIN_RETRY_INDICATOR . '  and ' . self::MAX_RETRY_INDICATOR);
+        }
+
+        if ($retryIndicator > self::MIN_RETRY_INDICATOR && $requestId === null) {
+            throw new InvalidArgumentException('Request id must be set if retry indicator is greater than 0');
+        }
+
+        $this->requestId = $requestId;
+        $this->retryIndicator = $retryIndicator;
     }
 
     public function getApiKey(): string
@@ -57,4 +81,14 @@ public function getClient(): Client
 
         return $this->client;
     }
+
+    public function getRequestId(): ?string
+    {
+        return $this->requestId;
+    }
+
+    public function getRetryIndicator(): int
+    {
+        return $this->retryIndicator;
+    }
 }
diff --git a/tests/SaferpayJson/Tests/Request/CommonRequestTest.php b/tests/SaferpayJson/Tests/Request/CommonRequestTest.php
index 1937577..4539740 100644
--- a/tests/SaferpayJson/Tests/Request/CommonRequestTest.php
+++ b/tests/SaferpayJson/Tests/Request/CommonRequestTest.php
@@ -6,6 +6,7 @@
 use GuzzleHttp\Client;
 use GuzzleHttp\Psr7\Response as GuzzleResponse;
 use GuzzleHttp\Psr7\Utils as GuzzleUtils;
+use InvalidArgumentException;
 use JMS\Serializer\SerializerBuilder;
 use PHPUnit\Framework\MockObject\MockObject;
 use PHPUnit\Framework\TestCase;
@@ -30,6 +31,39 @@ public function testErrorResponse(): void
         $this->executeRequest();
     }
 
+    public function getRequestConfigValidationParams(): array
+    {
+        return [
+            'first try' => [null, RequestConfig::MIN_RETRY_INDICATOR],
+            'second try' => [uniqid(), RequestConfig::MIN_RETRY_INDICATOR + 1],
+            'last try' => [uniqid(), RequestConfig::MAX_RETRY_INDICATOR],
+            'try after all retries exceeded' => [uniqid(), RequestConfig::MAX_RETRY_INDICATOR + 1, InvalidArgumentException::class],
+            'retry without previous request id' => [null, RequestConfig::MAX_RETRY_INDICATOR, InvalidArgumentException::class],
+        ];
+    }
+
+    /**
+     * @dataProvider getRequestConfigValidationParams
+     */
+    public function testRequestConfigValidation(
+        ?string $requestId,
+        int     $retryIndicator,
+        ?string $expectedException = null): void
+    {
+        if ($expectedException !== null) {
+            $this->expectException($expectedException, $requestId, $retryIndicator);
+        }
+
+        new RequestConfig(
+            'apiKey',
+            'apiSecret',
+            'customerId',
+            false,
+            $requestId,
+            $retryIndicator
+        );
+    }
+
     public function doTestSuccessfulResponse(string $responseClass): void
     {
         $this->successful = true;
@@ -87,7 +121,7 @@ private function getResponseMock(): MockObject
 
         $response->expects($this->any())
             ->method('getStatusCode')
-            ->will($this->returnValue($this->successful ? 200: 404));
+            ->will($this->returnValue($this->successful ? 200 : 404));
 
         if ($this->successful) {
             $content = $this->getFakedApiResponse($this->successfulResponseClass);