diff --git a/src/Connection/Api.php b/src/Connection/Api.php
index 6e6a68e..41fb311 100644
--- a/src/Connection/Api.php
+++ b/src/Connection/Api.php
@@ -4,7 +4,7 @@
 
 namespace Contributte\RabbitMQ\Connection;
 
-use Nette\InvalidStateException;
+use Contributte\RabbitMQ\Exchange\IExchange;
 
 class Api implements IApi
 {
@@ -51,34 +51,41 @@ public function getPolicies(): array
 	 * @param array<string, mixed> $policy
 	 */
 	public function createFederation(
-		string $type,
-		string $target,
+		string $name,
 		string $vhost,
 		string $uri,
 		int $prefetch,
 		int $reconnectDelay,
-		int $messageTTL,
-		int $expires,
+		?int $messageTTL,
+		?int $expires,
 		string $ackMode,
 		array $policy
 	): bool {
-		$uniqueName = "{$type}-{$target}-" . substr(md5($uri), -8);
+		$uniqueName = "{$name}-" . substr(md5($uri), -8);
 		$policyName = "{$uniqueName}-policy";
 		$federationName = "{$uniqueName}-federation";
 
+		$federationParamsPrototype = [
+			'uri' => $uri,
+			'prefetch-count' => $prefetch,
+			'reconnect-delay' => $reconnectDelay,
+			'ack-mode' => $ackMode,
+			'exchange' => $name,
+		];
+
+		if ($messageTTL) {
+			$federationParamsPrototype['message-ttl'] = $messageTTL;
+		}
+		if ($expires) {
+			$federationParamsPrototype['expires'] = $expires;
+		}
+
 		$federationParams = [
-			'value' => (object) [
-				'uri' => $uri,
-				'prefetch-count' => $prefetch,
-				'reconnect-delay' => $reconnectDelay,
-				'message-ttl' => $messageTTL,
-				'expires' => $expires,
-				'ack-mode' => $ackMode,
-				$type => $target,
-			],
+			'value' => (object) $federationParamsPrototype
 		];
+
 		$policyParams = [
-			'pattern' => $target,
+			'pattern' => $name,
 			'apply-to' => 'exchanges',
 			'priority' => $policy['priority'],
 			'definition' => (object) ($policy['arguments'] + ['federation-upstream' => $federationName]),
@@ -187,8 +194,8 @@ private function getPolicy(string $vhost, string $name): array
 			$url = $this->url . '/api/policies/' . urlencode($vhost) . '/' . $name;
 			$response = $this->get($url);
 
-			if ($response['status'] !== self::HTTP_OK) {
-				throw new InvalidStateException('Failed to get policy.');
+			if ($response['status'] === self::HTTP_NOT_FOUND && isset($response['data']->error)) {
+				return [];
 			}
 		} catch (\JsonException) {
 		}
@@ -235,8 +242,8 @@ private function getFederationUpstream(string $vhost, string $name): array
 			$url = $this->url . '/api/parameters/federation-upstream/' . urlencode($vhost) . '/' . $name;
 			$response = $this->get($url);
 
-			if ($response['status'] !== self::HTTP_OK) {
-				throw new InvalidStateException('Failed to get federation upstream.');
+			if ($response['status'] === self::HTTP_NOT_FOUND && isset($response['data']->error)) {
+				return [];
 			}
 		} catch (\JsonException) {
 		}
diff --git a/src/Connection/IApi.php b/src/Connection/IApi.php
index 9005b04..2232220 100644
--- a/src/Connection/IApi.php
+++ b/src/Connection/IApi.php
@@ -6,7 +6,7 @@
 
 interface IApi
 {
-	public const HTTP_OK = 200;
+	public const HTTP_NOT_FOUND = 404;
 
 	/**
 	 * @return array<int, mixed>
@@ -19,27 +19,24 @@ public function getFederations(): array;
 	public function getPolicies(): array;
 
 	/**
-	 * @param string $type
-	 * @param string $target
 	 * @param string $vhost
 	 * @param string $uri
 	 * @param int $prefetch
 	 * @param int $reconnectDelay
-	 * @param int $messageTTL
-	 * @param int $expires
+	 * @param ?int $messageTTL
+	 * @param ?int $expires
 	 * @param string $ackMode
 	 * @param array<string, mixed> $policy
 	 * @return bool
 	 */
 	public function createFederation(
-		string $type,
-		string $target,
+		string $name,
 		string $vhost,
 		string $uri,
 		int $prefetch,
 		int $reconnectDelay,
-		int $messageTTL,
-		int $expires,
+		?int $messageTTL,
+		?int $expires,
 		string $ackMode,
 		array $policy
 	): bool;
diff --git a/src/DI/Helpers/ExchangesHelper.php b/src/DI/Helpers/ExchangesHelper.php
index 7ebccdb..1e6356b 100644
--- a/src/DI/Helpers/ExchangesHelper.php
+++ b/src/DI/Helpers/ExchangesHelper.php
@@ -7,6 +7,8 @@
 use Contributte\RabbitMQ\Exchange\ExchangeDeclarator;
 use Contributte\RabbitMQ\Exchange\ExchangeFactory;
 use Contributte\RabbitMQ\Exchange\ExchangesDataBag;
+use Contributte\RabbitMQ\Exchange\IExchange;
+use Contributte\RabbitMQ\Queue\IQueue;
 use Nette\DI\ContainerBuilder;
 use Nette\DI\Definitions\ServiceDefinition;
 use Nette\Schema\Expect;
@@ -41,8 +43,8 @@ public function getConfigSchema(): Schema
 					'uri' => Expect::string()->required()->dynamic(),
 					'prefetchCount' => Expect::int(20)->min(1),
 					'reconnectDelay' => Expect::int(1)->min(1),
-					'messageTTL' => Expect::int(3_600_000)->min(1),
-					'expires' => Expect::int(3_600_000)->min(1),
+					'messageTTL' => Expect::int(),
+					'expires' => Expect::int(),
 					'ackMode' => Expect::anyOf(...self::ACK_TYPES)->default(self::ACK_TYPES[0]),
 					'policy' => Expect::structure([
 						'priority' => Expect::int(0),
diff --git a/src/Exchange/ExchangeDeclarator.php b/src/Exchange/ExchangeDeclarator.php
index d23c754..88e9696 100644
--- a/src/Exchange/ExchangeDeclarator.php
+++ b/src/Exchange/ExchangeDeclarator.php
@@ -10,10 +10,11 @@
 
 final class ExchangeDeclarator
 {
-	private const FEDERATION_TYPE = 'exchange';
-
-	public function __construct(private ConnectionFactory $connectionFactory, private ExchangesDataBag $exchangesDataBag, private QueueFactory $queueFactory)
-	{
+	public function __construct(
+		private ConnectionFactory $connectionFactory,
+		private ExchangesDataBag $exchangesDataBag,
+		private QueueFactory $queueFactory
+	) {
 	}
 
 
@@ -58,7 +59,6 @@ public function declareExchange(string $name): void
 				$federation = $exchangeData['federation'];
 
 				$api->createFederation(
-					self::FEDERATION_TYPE,
 					$name,
 					$connection->getVhost(),
 					$federation['uri'],