diff --git a/phpunit.xml b/phpunit.xml
index 7a016f4..20bd15d 100644
--- a/phpunit.xml
+++ b/phpunit.xml
@@ -8,7 +8,7 @@
 	convertNoticesToExceptions="true"
 	convertWarningsToExceptions="true"
 	processIsolation="false"
-	stopOnFailure="true">
+	stopOnFailure="false">
 	<testsuites>
 		<testsuite name="Unit Tests">
 			<directory suffix="Test.php">./tests</directory>
diff --git a/src/Http/ResponseFactory.php b/src/Http/ResponseFactory.php
index d791cd3..12c76fc 100644
--- a/src/Http/ResponseFactory.php
+++ b/src/Http/ResponseFactory.php
@@ -22,7 +22,7 @@ public static function createFromOutput(string $response, int $statusCode): Flex
 
         $version = null;
         /** @var string|null $message */
-        $message = null;
+        $message = $response;
         $success = false;
         $statistics = [];
         $rowCount = 0;
diff --git a/src/Http/ResponseHydrator.php b/src/Http/ResponseHydrator.php
index aeef6c7..b44f677 100644
--- a/src/Http/ResponseHydrator.php
+++ b/src/Http/ResponseHydrator.php
@@ -5,6 +5,7 @@
 use Consistence\ObjectPrototype;
 use EcomailFlexibee\Config;
 use EcomailFlexibee\Exception\EcomailFlexibeeNoEvidenceResult;
+use EcomailFlexibee\Exception\EcomailFlexibeeRequestError;
 use EcomailFlexibee\Http\Response\Response;
 use EcomailFlexibee\Result\EvidenceResult;
 
@@ -24,11 +25,16 @@ public function __construct(Config $config)
     /**
      * @param \EcomailFlexibee\Http\Response\Response $response
      * @return array<\EcomailFlexibee\Result\EvidenceResult>
+     * @throws \EcomailFlexibee\Exception\EcomailFlexibeeRequestError
      */
     public function convertResponseToEvidenceResults(Response $response): array
     {
         $data = $response->getData();
 
+        if (isset($data['success']) && $data['success'] === 'false') {
+            throw new EcomailFlexibeeRequestError($data['message']);
+        }
+
         if (!isset($data[$this->config->getEvidence()])) {
             if (\count($data) === 0) {
                 $data = $response->getStatistics();
@@ -41,7 +47,7 @@ public function convertResponseToEvidenceResults(Response $response): array
             return [new EvidenceResult($data)];
         }
 
-        return \array_map(static function (array $data){
+        return \array_map(static function (array $data) {
             return new EvidenceResult($data);
         }, $data[$this->config->getEvidence()]);
     }
diff --git a/tests/ClientTest.php b/tests/ClientTest.php
index 796ef13..368763a 100644
--- a/tests/ClientTest.php
+++ b/tests/ClientTest.php
@@ -206,11 +206,17 @@ public function testAllAndChunkInEvidence(): void
     public function testSearchInEvidence(): void
     {
         $client = new Client(Config::HOST, Config::COMPANY, Config::USERNAME, Config::PASSWORD, 'faktura-vydana', false, null);
-        $result = $client->searchInEvidence('kod<>\'JAN\'', []);
+        $result = $client->searchInEvidence('(kod neq \'JAN\')', []);
         Assert::assertTrue(count($result) > 0);
+        $this->expectException(EcomailFlexibeeRequestError::class);
+        $client->searchInEvidence('kod neq \'JAN\'', []);
+    }
 
-        $result = $client->searchInEvidence('(datSplat<\'2018-12-04\'%20and%20zuctovano=false)', []);
-        Assert::assertTrue(count($result) > 0);
+    public function testSearchInEvidenceWithInvalidUrl(): void
+    {
+        $client = new Client(Config::HOST, Config::COMPANY, Config::USERNAME, Config::PASSWORD, 'faktura-vydana', false, null);
+        $this->expectException(EcomailFlexibeeRequestError::class);
+        $client->searchInEvidence(' bla.json', []);
     }
 
     public function testDryRunRequest(): void
@@ -238,54 +244,6 @@ public function testMakeCustomRequest(): void
         Assert::assertArrayHasKey('properties', $data->getData());
     }
 
-    public function testWithExampleFlexibeeData(): void
-    {
-        /** @var string $content */
-        $content = file_get_contents(sprintf('%s/_Resources/smlouva.xml', __DIR__));
-        /** @var \SimpleXMLElement $content */
-        $content = simplexml_load_string($content);
-        /** @var string $content */
-        $content = json_encode((array) $content);
-        $xmlData = json_decode($content, true);
-
-        foreach ($xmlData as $evidenceName => $evidenceData) {
-            if (in_array($evidenceName, ['@attributes'], true)) {
-                continue;
-            }
-
-            $client = new Client(Config::HOST, Config::COMPANY, Config::USERNAME, Config::PASSWORD, $evidenceName, false, null);
-
-            if (array_key_exists('@attributes', $evidenceData)) {
-                unset($evidenceData['@attributes']);
-            }
-
-            if (array_key_exists('id', $evidenceData)) {
-                unset($evidenceData['id']);
-            }
-
-            try {
-                if ($evidenceName === 'smlouva' && isset($evidenceData['polozkySmlouvy'])) {
-                    unset($evidenceData['polozkySmlouvy']['@attributes']);
-                    $evidenceData['polozkySmlouvy']['kod'] = uniqid();
-
-                    foreach ($evidenceData['polozkySmlouvy']["smlouva-polozka"] as &$item) {
-                        $item['kod'] = uniqid();
-
-                    }
-                }
-
-                $idEvidence = (int) $client->save($evidenceData, null)->getData()[0]['id'];
-                $client->deleteById($idEvidence);
-            } catch (EcomailFlexibeeRequestError $exception) {
-                if (mb_stripos($exception->getMessage(), 'již používá jiný záznam') !== false) {
-                    continue;
-                }
-
-                throw $exception;
-            }
-        }
-    }
-
     public function testRunBackendProcesses(): void
     {
         $client = new Client(Config::HOST, Config::COMPANY, Config::USERNAME, Config::PASSWORD, 'pokladni-pohyb', false);
@@ -318,36 +276,11 @@ private function checkResponseStructure(EvidenceResult $result): void
     public function testUnknownCompany(): void
     {
         $client = new Client(Config::HOST, 'xxx', Config::USERNAME, Config::PASSWORD, 'faktura-vydana', false);
-        $this->expectException(EcomailFlexibeeSaveFailed::class);
+        $this->expectException(EcomailFlexibeeRequestError::class);
         $client->save([], null);
 
     }
 
-    public function testCreateUserRelations(): void
-    {
-        $client = new Client(Config::HOST, Config::COMPANY, Config::USERNAME, Config::PASSWORD, 'faktura-vydana', false);
-        $evidenceData = [
-            'nazev' => $this->faker->firstName,
-            'kod' => uniqid(),
-            'typDokl' => 'code:FAKTURA',
-        ];
-        $invoiceIdA = (int) $client->save($evidenceData, null)->getData()[0]['id'];
-        Assert::assertNotEmpty($invoiceIdA);
-        $evidenceData = [
-            'nazev' => $this->faker->firstName,
-            'kod' => uniqid(),
-            'typDokl' => 'code:FAKTURA',
-        ];
-        $invoiceIdB = (int) $client->save($evidenceData, null)->getData()[0]['id'];
-        Assert::assertNotEmpty($invoiceIdB);
-
-        $client->addUserRelation($invoiceIdA, $invoiceIdB, 10.0, 1);
-        $relationsEvidenceResult = $client->getUserRelations($invoiceIdA);
-        Assert::assertNotEmpty($relationsEvidenceResult->getData());
-        $relationId = $relationsEvidenceResult->getData()[0]['id'];
-        Assert::assertNotEmpty($relationId);
-    }
-
     public function testCreateSameEvidenceRecord(): void
     {
         $code = uniqid();
diff --git a/tests/_Resources/smlouva.xml b/tests/_Resources/smlouva.xml
deleted file mode 100644
index f49762c..0000000
--- a/tests/_Resources/smlouva.xml
+++ /dev/null
@@ -1,21 +0,0 @@
-<winstrom version="1.0">
-	<typ-smlouvy>
-		<id>code:TEST</id>
-		<kod>TEST</kod>
-		<nazev>Smlouva za služby</nazev>
-	</typ-smlouvy>
-	<smlouva>
-		<typSml>code:TEST</typSml>
-		<firma>code:FLEXIBEE</firma>
-		<polozkySmlouvy>
-			<smlouva-polozka>
-				<kod>XR ROSTFLOOR-750</kod>
-				<nazev>test</nazev>
-			</smlouva-polozka>
-			<smlouva-polozka>
-				<kod>XR 3267AA CR</kod>
-				<nazev>test2</nazev>
-			</smlouva-polozka>
-		</polozkySmlouvy>
-	</smlouva>
-</winstrom>