diff --git a/soap.php b/soap.php
new file mode 100644
index 0000000..919e22c
--- /dev/null
+++ b/soap.php
@@ -0,0 +1,126 @@
+<?php declare(strict_types=1);
+
+require __DIR__ . '/vendor/autoload.php';
+
+$wsdl = 'https://adisrws.mfcr.cz/dpr/axis2/services/rozhraniCRPDPH.rozhraniCRPDPHSOAP';
+
+class StatusNespolehlivyPlatceRequest
+{
+	public function __construct(public string $dic)
+	{
+	}
+
+}
+
+class StatusNespolehlivyPlatceRozsirenyResponse
+{
+
+}
+
+$soap = new SoapClient($wsdl, [
+	'soap_version' => SOAP_1_1,
+	'cache_wsdl' => WSDL_CACHE_MEMORY,
+	'classmap' => [
+		'StatusNespolehlivyPlatceRequest' => StatusNespolehlivyPlatceRequest::class,
+	],
+]);
+
+
+//array (23)
+//   0 => string
+//|  'struct StatusNespolehlivyPlatceRequest {\n
+//   |    DICType dic;\n
+//   |   }'
+//   1 => string
+//|  'struct StatusNespolehlivyPlatceResponse {\n
+//   |    StatusType status;\n
+//   |    InformaceOPlatciType statusPlatceDPH;\n
+//   |   }'
+//   2 => string
+//|  'struct StatusNespolehlivyPlatceRozsirenyResponse {\n
+//   |    StatusType status;\n
+//   |    InformaceOPlatciRozsireneType statusPlatceDPH;\n
+//   |   }'
+//   3 => string
+//|  'struct StatusNespolehlivySubjektRozsirenyResponse {\n
+//   |    StatusType status;\n
+//   |    InformaceOSubjektuRozsireneType statusSubjektu;\n
+//   |   }'
+//   4 => string
+//|  'struct SeznamNespolehlivyPlatceResponse {\n
+//   |    StatusType status;\n
+//   |    InformaceOPlatciType statusPlatceDPH;\n
+//   |   }'
+//   5 => string
+//|  'struct SeznamNespolehlivyPlatceRequest {\n
+//   |   }'
+//   6 => 'string DICType'
+//   7 => string
+//|  'struct InformaceOPlatciType {\n
+//   |    SeznamZverejnenychUctuType zverejneneUcty;\n
+//   |    DICType dic;\n
+//   |    NespolehlivyPlatceType nespolehlivyPlatce;\n
+//   |    date datumZverejn ... cisloFu;\n
+//   |   }'
+//   8 => 'string anonymous8'
+//   9 => string
+//|  'struct InformaceOPlatciRozsireneType {\n
+//   |    string nazevSubjektu;\n
+//   |    Adresa adresa;\n
+//   |   }'
+//   10 => string
+//|  'struct InformaceOSubjektuRozsireneType {\n
+//   |    string nazevSubjektu;\n
+//   |    Adresa adresa;\n
+//   |    TypSubjektuDPHType typSubjektu;\n
+//   |   }'
+//   11 => string
+//|  'struct Adresa {\n
+//   |    string uliceCislo;\n
+//   |    string castObce;\n
+//   |    string mesto;\n
+//   |    string psc;\n
+//   |    string stat;\n
+//   |   }'
+//   12 => 'string NespolehlivyPlatceType'
+//   13 => 'string TypSubjektuDPHType'
+//   14 => 'string BezVypisuUctuType'
+//   15 => string
+//|  'struct StandardniUcetType {\n
+//   |    anonymous16 predcisli;\n
+//   |    anonymous17 cislo;\n
+//   |    anonymous18 kodBanky;\n
+//   |   }'
+//   16 => 'string anonymous16'
+//   17 => 'string anonymous17'
+//   18 => 'string anonymous18'
+//   19 => string
+//|  'struct ZverejnenyUcetType {\n
+//   |    StandardniUcetType standardniUcet;\n
+//   |    NestandardniUcetType nestandardniUcet;\n
+//   |    date datumZverejneni;\n
+//   |    date datumZverejneniUkonceni;\n
+//   |   }'
+//   20 => string
+//|  'struct SeznamZverejnenychUctuType {\n
+//   |    ZverejnenyUcetType ucet;\n
+//   |   }'
+//   21 => string
+//|  'struct NestandardniUcetType {\n
+//   |    string cislo;\n
+//   |   }'
+//   22 => string
+//|  'struct StatusType {\n
+//   |    date odpovedGenerovana;\n
+//   |    int statusCode;\n
+//   |    string statusText;\n
+//   |    BezVypisuUctuType bezVypisuUctu;\n
+//   |   }'
+
+//0 => 'StatusNespolehlivyPlatceResponse getStatusNespolehlivyPlatce(StatusNespolehlivyPlatceRequest $parameters)'
+//1 => 'SeznamNespolehlivyPlatceResponse getSeznamNespolehlivyPlatce(SeznamNespolehlivyPlatceRequest $parameters)'
+//2 => 'StatusNespolehlivyPlatceRozsirenyResponse getStatusNespolehlivyPlatceRozsireny(StatusNespolehlivyPlatceRozsirenyResponse $parameters)'
+//3 => 'StatusNespolehlivySubjektRozsirenyResponse getStatusNespolehlivySubjektRozsireny(StatusNespolehlivyPlatceRequest $parameters)'
+
+//dumpe($soap->__getTypes());
+dumpe($soap->getStatusNespolehlivyPlatce(new StatusNespolehlivyPlatceRequest('CZ49240901')));
diff --git a/src/Ares.php b/src/Ares.php
index 614913e..0c8d9ba 100644
--- a/src/Ares.php
+++ b/src/Ares.php
@@ -4,7 +4,6 @@
 
 use Generator;
 use h4kuna\Ares\Ares\Core\Data;
-use h4kuna\Ares\Ares\Core\DataInterface;
 use h4kuna\Ares\Exceptions\IdentificationNumberNotFoundException;
 use h4kuna\Memoize\MemoryStorage;
 use stdClass;
@@ -28,27 +27,22 @@ public function getAresClient(): Ares\Client
 
 
 	/**
-	 * @template NAME
-	 * @param array<NAME, string|int> $identificationNumbers
-	 * @return Generator<NAME, Data>
+	 * @template KeyName
+	 * @param array<KeyName, string|int> $identificationNumbers
+	 * @return Generator<(int&KeyName)|(KeyName&string), Data>
 	 */
 	public function loadBasicMulti(array $identificationNumbers): Generator
 	{
-		/** @var Generator<NAME, Data> $data */
-		$data = $this->aresContentProvider()->loadByIdentificationNumbers($identificationNumbers);
-		return $data;
+		return $this->aresContentProviderCache()->loadByIdentificationNumbers($identificationNumbers);
 	}
 
 
 	/**
-	 * @return Data
 	 * @throws IdentificationNumberNotFoundException
 	 */
-	public function loadBasic(string $in): DataInterface
+	public function loadBasic(string $in): Data
 	{
-		/** @var Data $data */
-		$data = $this->aresContentProvider()->load($in);
-		return $data;
+		return $this->aresContentProviderCache()->load($in);
 	}
 
 
@@ -60,8 +54,13 @@ public function loadDataBox(string $in): stdClass
 
 	protected function aresContentProvider(): Ares\Core\ContentProvider
 	{
-		return $this->memoize(__METHOD__, fn (
-		) => new Ares\Core\ContentProvider(new Ares\Core\JsonToDataTransformer(), $this->aresClient));
+		return new Ares\Core\ContentProvider(new Ares\Core\JsonToDataTransformer(), $this->getAresClient());
+	}
+
+
+	private function aresContentProviderCache(): Ares\Core\ContentProvider
+	{
+		return $this->memoize(__METHOD__, fn () => $this->aresContentProvider());
 	}
 
 }
diff --git a/src/Ares/Client.php b/src/Ares/Client.php
index 3b2128b..7772920 100644
--- a/src/Ares/Client.php
+++ b/src/Ares/Client.php
@@ -22,7 +22,7 @@ public function __construct(
 
 
 	/**
-	 * @param Sources::SERVICE_* $key
+	 * @param Sources::SERVICE_*|Sources::CORE $key
 	 * @param array<string, mixed> $data
 	 */
 	public function searchEndpoint(string $key, array $data = []): stdClass
@@ -35,7 +35,7 @@ public function searchEndpoint(string $key, array $data = []): stdClass
 
 
 	/**
-	 * @param Sources::SERVICE_* $key
+	 * @param Sources::SERVICE_*|Sources::CORE $key
 	 */
 	public function useEndpoint(string $key, string $in): stdClass
 	{
diff --git a/src/Ares/Core/ContentProvider.php b/src/Ares/Core/ContentProvider.php
index 5d745bb..9dea663 100644
--- a/src/Ares/Core/ContentProvider.php
+++ b/src/Ares/Core/ContentProvider.php
@@ -14,7 +14,7 @@ final class ContentProvider
 
 
 	public function __construct(
-		private JsonToDataTransformerInterface $jsonTransformer,
+		private JsonToDataTransformer $jsonTransformer,
 		private Client $client,
 	)
 	{
@@ -22,9 +22,9 @@ public function __construct(
 
 
 	/**
-	 * @template NAME
-	 * @param array<NAME, string|int> $identificationNumbers
-	 * @return Generator<NAME, DataInterface>
+	 * @template KeyName
+	 * @param array<KeyName, string|int> $identificationNumbers
+	 * @return Generator<(int&KeyName)|(KeyName&string), Data>
 	 */
 	public function loadByIdentificationNumbers(array $identificationNumbers): Generator
 	{
@@ -32,7 +32,7 @@ public function loadByIdentificationNumbers(array $identificationNumbers): Gener
 		$chunks = array_chunk(array_keys($duplicity), self::BATCH);
 
 		foreach ($chunks as $INs) {
-			$responseData = $this->client->searchEndpoint(Sources::SERVICE_CORE, [
+			$responseData = $this->client->searchEndpoint(Sources::CORE, [
 				'ico' => $INs,
 				'pocet' => self::BATCH,
 			])->ekonomickeSubjekty ?? [];
@@ -50,10 +50,10 @@ public function loadByIdentificationNumbers(array $identificationNumbers): Gener
 	/**
 	 * @throws IdentificationNumberNotFoundException
 	 */
-	public function load(string $in): DataInterface
+	public function load(string $in): Data
 	{
 		try {
-			$json = $this->client->useEndpoint(Sources::SERVICE_CORE, $in);
+			$json = $this->client->useEndpoint(Sources::CORE, $in);
 		} catch (IdentificationNumberNotFoundException) {
 			$json = $this->client->useEndpoint(Sources::SERVICE_RES, $in);
 			$records = $json->zaznamy ?? [];
diff --git a/src/Ares/Core/Data.php b/src/Ares/Core/Data.php
index 20cb592..d03dfdc 100644
--- a/src/Ares/Core/Data.php
+++ b/src/Ares/Core/Data.php
@@ -11,7 +11,7 @@
 /**
  * @phpstan-type DataType array<string, mixed>
  */
-class Data implements DataInterface, JsonSerializable, Stringable
+class Data implements JsonSerializable, Stringable
 {
 	public bool $active;
 
@@ -37,12 +37,20 @@ class Data implements DataInterface, JsonSerializable, Stringable
 
 	public ?string $street;
 
-	/** <prefix>DIČ */
+	/**
+	 * <prefix>DIČ
+	 * @todo how fix it, ARES incorrect data in few cases
+	 */
 	public ?string $tin;
 
-	/** DIČ */
+	/**
+	 * @todo how fix it, ARES incorrect data in few cases
+	 */
 	public ?string $vat_id;
 
+	/**
+	 * @todo how fix it, ARES incorrect data in few cases
+	 */
 	public bool $vat_payer;
 
 	public ?string $zip;
@@ -57,7 +65,7 @@ class Data implements DataInterface, JsonSerializable, Stringable
 	public array $nace = [];
 
 	/**
-	 * @var array<Sources::SER*, bool>
+	 * @var array<Sources::SER*, true|string>
 	 */
 	public array $sources = [];
 
@@ -113,6 +121,9 @@ public function __unserialize(array $data): void
 	}
 
 
+	/**
+	 * @return DataType
+	 */
 	public function toArray(): array
 	{
 		$data = get_object_vars($this);
diff --git a/src/Ares/Core/DataInterface.php b/src/Ares/Core/DataInterface.php
deleted file mode 100644
index 4d5ec6f..0000000
--- a/src/Ares/Core/DataInterface.php
+++ /dev/null
@@ -1,9 +0,0 @@
-<?php declare(strict_types=1);
-
-namespace h4kuna\Ares\Ares\Core;
-
-interface DataInterface
-{
-	function getIn(): string;
-
-}
diff --git a/src/Ares/Core/JsonToDataTransformer.php b/src/Ares/Core/JsonToDataTransformer.php
index cbe7ab2..ecfe1d5 100644
--- a/src/Ares/Core/JsonToDataTransformer.php
+++ b/src/Ares/Core/JsonToDataTransformer.php
@@ -3,10 +3,11 @@
 namespace h4kuna\Ares\Ares\Core;
 
 use h4kuna\Ares\Ares\Helper;
+use h4kuna\Ares\Ares\Sources;
 use h4kuna\Ares\Tools\Strings;
 use stdClass;
 
-final class JsonToDataTransformer implements JsonToDataTransformerInterface
+class JsonToDataTransformer
 {
 
 	public function transform(stdClass $json): Data
@@ -17,7 +18,9 @@ public function transform(stdClass $json): Data
 		$data->in = (string) $json->ico;
 		$data->vat_id = Strings::trimNull($json->dic ?? null);
 		$data->tin = isset($data->vat_id) ? 'CZ' . $data->vat_id : null;
-		$data->vat_payer = (bool) $data->vat_id;
+		$data->sources = Helper::services((array) ($json->seznamRegistraci ?? []));
+
+		$data->vat_payer = $data->sources[Sources::SER_NO_DPH] === true;
 		$data->company = Strings::trimNull($json->obchodniJmeno ?? null);
 
 		$data->zip = Strings::trimNull((string) ($json->sidlo->psc ?? '')); // input is int
@@ -42,7 +45,7 @@ public function transform(stdClass $json): Data
 		$data->nace = (array) ($json->czNace ?? []);
 		$data->legal_form_code = (int) $json->pravniForma;
 		$data->is_person = Helper::isPerson($data->legal_form_code);
-		$data->sources = Helper::services((array) ($json->seznamRegistraci ?? []));
+
 		assert($json->datumVzniku !== null);
 		$data->created = Strings::createDateTime($json->datumVzniku);
 		$data->dissolved = Strings::createDateTime($json->datumZaniku ?? null);
diff --git a/src/Ares/Core/JsonToDataTransformerInterface.php b/src/Ares/Core/JsonToDataTransformerInterface.php
deleted file mode 100644
index 8f17983..0000000
--- a/src/Ares/Core/JsonToDataTransformerInterface.php
+++ /dev/null
@@ -1,11 +0,0 @@
-<?php declare(strict_types=1);
-
-namespace h4kuna\Ares\Ares\Core;
-
-use stdClass;
-
-interface JsonToDataTransformerInterface
-{
-	function transform(stdClass $json): DataInterface;
-
-}
diff --git a/src/Ares/Helper.php b/src/Ares/Helper.php
index 89b1231..6be269f 100644
--- a/src/Ares/Helper.php
+++ b/src/Ares/Helper.php
@@ -27,10 +27,25 @@ final class Helper
 		Sources::SERVICE_RS => '/ekonomicke-subjekty-rs/{ico}',
 		Sources::SERVICE_SZR => '/ekonomicke-subjekty-szr/{ico}',
 		Sources::SERVICE_CEU => '/ekonomicke-subjekty-ceu/{ico}',
-		Sources::SERVICE_CORE => '/ekonomicke-subjekty/{ico}',
+		Sources::CORE => '/ekonomicke-subjekty/{ico}',
 		Sources::DIAL => '/ciselniky-nazevniky/{ico}',
 	];
 
+	private const SERVICES = [
+		Sources::SERVICE_VR => 'NEEXISTUJICI',
+		Sources::SERVICE_RES => 'NEEXISTUJICI',
+		Sources::SERVICE_RZP => 'NEEXISTUJICI',
+		Sources::SERVICE_NRPZS => 'NEEXISTUJICI',
+		Sources::SERVICE_RCNS => 'NEEXISTUJICI',
+		Sources::SERVICE_RPSH => 'NEEXISTUJICI',
+		Sources::SERVICE_RS => 'NEEXISTUJICI',
+		Sources::SERVICE_SZR => 'NEEXISTUJICI',
+		Sources::SERVICE_CEU => 'NEEXISTUJICI',
+		Sources::SER_NO_DPH => 'NEEXISTUJICI',
+		Sources::SER_NO_IR => 'NEEXISTUJICI',
+		Sources::SER_NO_RED => 'NEEXISTUJICI',
+	];
+
 
 	public static function endpointExists(string $source): bool
 	{
@@ -39,7 +54,7 @@ public static function endpointExists(string $source): bool
 
 
 	/**
-	 * @param Sources::SERVICE_*|Sources::DIAL $source
+	 * @param Sources::SERVICE_*|Sources::DIAL|Sources::CORE $source
 	 */
 	public static function prepareUrlSearch(string $source): string
 	{
@@ -48,7 +63,7 @@ public static function prepareUrlSearch(string $source): string
 
 
 	/**
-	 * @param Sources::SERVICE_*|Sources::DIAL $source
+	 * @param Sources::SERVICE_*|Sources::DIAL|Sources::CORE $source
 	 */
 	public static function prepareUrl(string $source, string $in): string
 	{
@@ -66,16 +81,16 @@ public static function prepareUrl(string $source, string $in): string
 
 	/**
 	 * @param array<Sources::SER*, string> $registrations
-	 * @return array<Sources::SER*, bool>
+	 * @return array<Sources::SER*, true|string>
 	 */
 	public static function services(array $registrations): array
 	{
 		$map = [];
 		foreach ($registrations as $k => $v) {
-			$map[$k] = $v === 'AKTIVNI';
+			$map[$k] = $v === 'AKTIVNI' ? true : $v;
 		}
 
-		return $map;
+		return $map + self::SERVICES;
 	}
 
 
diff --git a/src/Ares/Sources.php b/src/Ares/Sources.php
index 61aeee5..88be161 100644
--- a/src/Ares/Sources.php
+++ b/src/Ares/Sources.php
@@ -26,7 +26,7 @@ final class Sources
 	// Záznamy Centrální evidence úpadců
 	public const SERVICE_CEU = 'stavZdrojeCeu';
 	// Data ekonomického subjektu z Jádra ARES
-	public const SERVICE_CORE = 'ares';
+	public const CORE = 'ares';
 
 	// not supported but note
 	// https://adisspr.mfcr.cz/pmd/dokumentace/webove-sluzby-spolehlivost-platcu
diff --git a/tests/fixtures/response/16415345.json b/tests/fixtures/response/16415345.json
index 3920351..edb1e39 100644
--- a/tests/fixtures/response/16415345.json
+++ b/tests/fixtures/response/16415345.json
@@ -25,17 +25,17 @@
         "620"
     ],
     "sources": {
-        "stavZdrojeVr": false,
+        "stavZdrojeVr": "NEEXISTUJICI",
         "stavZdrojeRes": true,
         "stavZdrojeRzp": true,
-        "stavZdrojeNrpzs": false,
-        "stavZdrojeRpsh": false,
-        "stavZdrojeRcns": false,
-        "stavZdrojeSzr": false,
+        "stavZdrojeNrpzs": "NEEXISTUJICI",
+        "stavZdrojeRpsh": "NEEXISTUJICI",
+        "stavZdrojeRcns": "NEEXISTUJICI",
+        "stavZdrojeSzr": "NEEXISTUJICI",
         "stavZdrojeDph": true,
-        "stavZdrojeIr": false,
-        "stavZdrojeCeu": false,
-        "stavZdrojeRs": false,
-        "stavZdrojeRed": false
+        "stavZdrojeIr": "NEEXISTUJICI",
+        "stavZdrojeCeu": "NEEXISTUJICI",
+        "stavZdrojeRs": "NEEXISTUJICI",
+        "stavZdrojeRed": "NEEXISTUJICI"
     }
 }
\ No newline at end of file
diff --git a/tests/fixtures/response/2491427.json b/tests/fixtures/response/2491427.json
index 2bce3ea..fd844ca 100644
--- a/tests/fixtures/response/2491427.json
+++ b/tests/fixtures/response/2491427.json
@@ -23,15 +23,15 @@
     "sources": {
         "stavZdrojeVr": true,
         "stavZdrojeRes": true,
-        "stavZdrojeRzp": false,
-        "stavZdrojeNrpzs": false,
-        "stavZdrojeRpsh": false,
-        "stavZdrojeRcns": false,
-        "stavZdrojeSzr": false,
-        "stavZdrojeDph": false,
-        "stavZdrojeIr": false,
-        "stavZdrojeCeu": false,
-        "stavZdrojeRs": false,
-        "stavZdrojeRed": false
+        "stavZdrojeRzp": "NEEXISTUJICI",
+        "stavZdrojeNrpzs": "NEEXISTUJICI",
+        "stavZdrojeRpsh": "NEEXISTUJICI",
+        "stavZdrojeRcns": "NEEXISTUJICI",
+        "stavZdrojeSzr": "NEEXISTUJICI",
+        "stavZdrojeDph": "NEEXISTUJICI",
+        "stavZdrojeIr": "NEEXISTUJICI",
+        "stavZdrojeCeu": "NEEXISTUJICI",
+        "stavZdrojeRs": "NEEXISTUJICI",
+        "stavZdrojeRed": "NEEXISTUJICI"
     }
 }
\ No newline at end of file
diff --git a/tests/fixtures/response/25110161.json b/tests/fixtures/response/25110161.json
index f6c98e6..b1491e2 100644
--- a/tests/fixtures/response/25110161.json
+++ b/tests/fixtures/response/25110161.json
@@ -46,14 +46,14 @@
         "stavZdrojeVr": true,
         "stavZdrojeRes": true,
         "stavZdrojeRzp": true,
-        "stavZdrojeNrpzs": false,
-        "stavZdrojeRpsh": false,
-        "stavZdrojeRcns": false,
-        "stavZdrojeSzr": false,
+        "stavZdrojeNrpzs": "NEEXISTUJICI",
+        "stavZdrojeRpsh": "NEEXISTUJICI",
+        "stavZdrojeRcns": "NEEXISTUJICI",
+        "stavZdrojeSzr": "NEEXISTUJICI",
         "stavZdrojeDph": true,
-        "stavZdrojeIr": false,
-        "stavZdrojeCeu": false,
-        "stavZdrojeRs": false,
-        "stavZdrojeRed": false
+        "stavZdrojeIr": "NEEXISTUJICI",
+        "stavZdrojeCeu": "NEEXISTUJICI",
+        "stavZdrojeRs": "NEEXISTUJICI",
+        "stavZdrojeRed": "NEEXISTUJICI"
     }
 }
\ No newline at end of file
diff --git a/tests/fixtures/response/25596641.json b/tests/fixtures/response/25596641.json
index 42f74f8..98c055c 100644
--- a/tests/fixtures/response/25596641.json
+++ b/tests/fixtures/response/25596641.json
@@ -20,5 +20,18 @@
     "nace": [
         "620"
     ],
-    "sources": []
+    "sources": {
+        "stavZdrojeVr": "NEEXISTUJICI",
+        "stavZdrojeRes": "NEEXISTUJICI",
+        "stavZdrojeRzp": "NEEXISTUJICI",
+        "stavZdrojeNrpzs": "NEEXISTUJICI",
+        "stavZdrojeRcns": "NEEXISTUJICI",
+        "stavZdrojeRpsh": "NEEXISTUJICI",
+        "stavZdrojeRs": "NEEXISTUJICI",
+        "stavZdrojeSzr": "NEEXISTUJICI",
+        "stavZdrojeCeu": "NEEXISTUJICI",
+        "stavZdrojeDph": "NEEXISTUJICI",
+        "stavZdrojeIr": "NEEXISTUJICI",
+        "stavZdrojeRed": "NEEXISTUJICI"
+    }
 }
\ No newline at end of file
diff --git a/tests/fixtures/response/26713250.json b/tests/fixtures/response/26713250.json
index 102610b..764347e 100644
--- a/tests/fixtures/response/26713250.json
+++ b/tests/fixtures/response/26713250.json
@@ -28,14 +28,14 @@
         "stavZdrojeVr": true,
         "stavZdrojeRes": true,
         "stavZdrojeRzp": true,
-        "stavZdrojeNrpzs": false,
-        "stavZdrojeRpsh": false,
-        "stavZdrojeRcns": false,
-        "stavZdrojeSzr": false,
+        "stavZdrojeNrpzs": "NEEXISTUJICI",
+        "stavZdrojeRpsh": "NEEXISTUJICI",
+        "stavZdrojeRcns": "NEEXISTUJICI",
+        "stavZdrojeSzr": "NEEXISTUJICI",
         "stavZdrojeDph": true,
-        "stavZdrojeIr": false,
-        "stavZdrojeCeu": false,
-        "stavZdrojeRs": false,
-        "stavZdrojeRed": false
+        "stavZdrojeIr": "NEEXISTUJICI",
+        "stavZdrojeCeu": "NEEXISTUJICI",
+        "stavZdrojeRs": "NEEXISTUJICI",
+        "stavZdrojeRed": "NEEXISTUJICI"
     }
 }
\ No newline at end of file
diff --git a/tests/fixtures/response/27082440.json b/tests/fixtures/response/27082440.json
index 83d22ad..83a37b5 100644
--- a/tests/fixtures/response/27082440.json
+++ b/tests/fixtures/response/27082440.json
@@ -37,14 +37,14 @@
         "stavZdrojeVr": true,
         "stavZdrojeRes": true,
         "stavZdrojeRzp": true,
-        "stavZdrojeNrpzs": false,
-        "stavZdrojeRpsh": false,
-        "stavZdrojeRcns": false,
-        "stavZdrojeSzr": false,
+        "stavZdrojeNrpzs": "NEEXISTUJICI",
+        "stavZdrojeRpsh": "NEEXISTUJICI",
+        "stavZdrojeRcns": "NEEXISTUJICI",
+        "stavZdrojeSzr": "NEEXISTUJICI",
         "stavZdrojeDph": true,
-        "stavZdrojeIr": false,
-        "stavZdrojeCeu": false,
-        "stavZdrojeRs": false,
-        "stavZdrojeRed": false
+        "stavZdrojeIr": "NEEXISTUJICI",
+        "stavZdrojeCeu": "NEEXISTUJICI",
+        "stavZdrojeRs": "NEEXISTUJICI",
+        "stavZdrojeRed": "NEEXISTUJICI"
     }
 }
\ No newline at end of file
diff --git a/tests/fixtures/response/49812670.json b/tests/fixtures/response/49812670.json
index 8294fed..1d00f83 100644
--- a/tests/fixtures/response/49812670.json
+++ b/tests/fixtures/response/49812670.json
@@ -36,14 +36,14 @@
         "stavZdrojeVr": true,
         "stavZdrojeRes": true,
         "stavZdrojeRzp": true,
-        "stavZdrojeNrpzs": false,
-        "stavZdrojeRpsh": false,
-        "stavZdrojeRcns": false,
-        "stavZdrojeSzr": false,
+        "stavZdrojeNrpzs": "NEEXISTUJICI",
+        "stavZdrojeRpsh": "NEEXISTUJICI",
+        "stavZdrojeRcns": "NEEXISTUJICI",
+        "stavZdrojeSzr": "NEEXISTUJICI",
         "stavZdrojeDph": true,
-        "stavZdrojeIr": false,
-        "stavZdrojeCeu": false,
-        "stavZdrojeRs": false,
-        "stavZdrojeRed": false
+        "stavZdrojeIr": "NEEXISTUJICI",
+        "stavZdrojeCeu": "NEEXISTUJICI",
+        "stavZdrojeRs": "NEEXISTUJICI",
+        "stavZdrojeRed": "NEEXISTUJICI"
     }
 }
\ No newline at end of file
diff --git a/tests/fixtures/response/61682039.json b/tests/fixtures/response/61682039.json
index 871ed3e..980c19e 100644
--- a/tests/fixtures/response/61682039.json
+++ b/tests/fixtures/response/61682039.json
@@ -30,14 +30,14 @@
         "stavZdrojeVr": true,
         "stavZdrojeRes": true,
         "stavZdrojeRzp": true,
-        "stavZdrojeNrpzs": false,
-        "stavZdrojeRpsh": false,
-        "stavZdrojeRcns": false,
-        "stavZdrojeSzr": false,
+        "stavZdrojeNrpzs": "NEEXISTUJICI",
+        "stavZdrojeRpsh": "NEEXISTUJICI",
+        "stavZdrojeRcns": "NEEXISTUJICI",
+        "stavZdrojeSzr": "NEEXISTUJICI",
         "stavZdrojeDph": true,
-        "stavZdrojeIr": false,
-        "stavZdrojeCeu": false,
-        "stavZdrojeRs": false,
-        "stavZdrojeRed": false
+        "stavZdrojeIr": "NEEXISTUJICI",
+        "stavZdrojeCeu": "NEEXISTUJICI",
+        "stavZdrojeRs": "NEEXISTUJICI",
+        "stavZdrojeRed": "NEEXISTUJICI"
     }
 }
\ No newline at end of file
diff --git a/tests/fixtures/response/62413686.json b/tests/fixtures/response/62413686.json
index 298dccf..912f950 100644
--- a/tests/fixtures/response/62413686.json
+++ b/tests/fixtures/response/62413686.json
@@ -26,14 +26,14 @@
         "stavZdrojeVr": true,
         "stavZdrojeRes": true,
         "stavZdrojeRzp": true,
-        "stavZdrojeNrpzs": false,
-        "stavZdrojeRpsh": false,
-        "stavZdrojeRcns": false,
-        "stavZdrojeSzr": false,
-        "stavZdrojeDph": false,
-        "stavZdrojeIr": false,
-        "stavZdrojeCeu": false,
-        "stavZdrojeRs": false,
-        "stavZdrojeRed": false
+        "stavZdrojeNrpzs": "NEEXISTUJICI",
+        "stavZdrojeRpsh": "NEEXISTUJICI",
+        "stavZdrojeRcns": "NEEXISTUJICI",
+        "stavZdrojeSzr": "NEEXISTUJICI",
+        "stavZdrojeDph": "NEEXISTUJICI",
+        "stavZdrojeIr": "NEEXISTUJICI",
+        "stavZdrojeCeu": "NEEXISTUJICI",
+        "stavZdrojeRs": "NEEXISTUJICI",
+        "stavZdrojeRed": "NEEXISTUJICI"
     }
 }
\ No newline at end of file
diff --git a/tests/fixtures/response/87744473.json b/tests/fixtures/response/87744473.json
index 07d326d..b8aa3d1 100644
--- a/tests/fixtures/response/87744473.json
+++ b/tests/fixtures/response/87744473.json
@@ -25,17 +25,17 @@
         "7490"
     ],
     "sources": {
-        "stavZdrojeVr": false,
+        "stavZdrojeVr": "NEEXISTUJICI",
         "stavZdrojeRes": true,
         "stavZdrojeRzp": true,
-        "stavZdrojeNrpzs": false,
-        "stavZdrojeRpsh": false,
-        "stavZdrojeRcns": false,
-        "stavZdrojeSzr": false,
+        "stavZdrojeNrpzs": "NEEXISTUJICI",
+        "stavZdrojeRpsh": "NEEXISTUJICI",
+        "stavZdrojeRcns": "NEEXISTUJICI",
+        "stavZdrojeSzr": "NEEXISTUJICI",
         "stavZdrojeDph": true,
-        "stavZdrojeIr": false,
-        "stavZdrojeCeu": false,
-        "stavZdrojeRs": false,
-        "stavZdrojeRed": false
+        "stavZdrojeIr": "NEEXISTUJICI",
+        "stavZdrojeCeu": "NEEXISTUJICI",
+        "stavZdrojeRs": "NEEXISTUJICI",
+        "stavZdrojeRed": "NEEXISTUJICI"
     }
 }
\ No newline at end of file
diff --git a/tests/src/E2E/CoreTest.php b/tests/src/E2E/CoreTest.php
index deb292b..a479e69 100644
--- a/tests/src/E2E/CoreTest.php
+++ b/tests/src/E2E/CoreTest.php
@@ -21,6 +21,9 @@ final class CoreTest extends TestCase
 	protected function provideCore(): array
 	{
 		return [
+			['2445344'], // Skanska Residential a.s., DIČ CZ699004845
+			['1457195'],
+			['49240901'], // Raiffeisenbank a.s., DIČ CZ699003154
 			['61682039'],
 			['16415345'],
 			['25596641'], // inactive
@@ -42,7 +45,7 @@ public function testCore(string $in): void
 	{
 		$data = (new Ares\AresFactory())->create()->loadBasic($in);
 		$json = Json::decode(Json::encode($data));
-		Assert::equal(loadResult($in), $json);
+		Assert::equal(loadResult($data->getIn()), $json);
 	}
 
 
diff --git a/tests/src/E2E/VrEndpointTest.php b/tests/src/E2E/VrEndpointTest.php
index b9bf4ac..e9d0175 100644
--- a/tests/src/E2E/VrEndpointTest.php
+++ b/tests/src/E2E/VrEndpointTest.php
@@ -22,7 +22,7 @@ public function testBasic(): void
 
 		$provider = new Ares\Ares\Client($transportProvider);
 
-		$coreData = $provider->useEndpoint(Ares\Ares\Sources::SERVICE_CORE, '87744473');
+		$coreData = $provider->useEndpoint(Ares\Ares\Sources::CORE, '87744473');
 		Assert::same('87744473', $coreData->ico);
 
 		$data = $provider->useEndpoint(Ares\Ares\Sources::SERVICE_RES, '87744473');