diff --git a/composer.json b/composer.json
index 6508451c..03a460ca 100755
--- a/composer.json
+++ b/composer.json
@@ -1,6 +1,6 @@
 {
     "name": "myparcelnl/sdk",
-    "version": "v2.1.0-beta.3",
+    "version": "v2.1.0-beta.4",
     "description": "This package is designed to send and receive data from MyParcel by means of an API.",
     "homepage": "https://www.myparcel.nl",
     "tags": ["MyParcel", "My Parcel", "Flespakket", "Post NL", "PostNL"],
diff --git a/src/Adapter/ConsignmentAdapter.php b/src/Adapter/ConsignmentAdapter.php
index c9adb388..1e4782b0 100644
--- a/src/Adapter/ConsignmentAdapter.php
+++ b/src/Adapter/ConsignmentAdapter.php
@@ -24,14 +24,16 @@ class ConsignmentAdapter
 
     /**
      * ConsignmentDecode constructor.
+     *
      * @param array $data
-     * @param string $apiKey
+     * @param MyParcelConsignment $consignment
+     *
      * @throws \Exception
      */
-    public function __construct($data, $apiKey)
+    public function __construct($data, $consignment)
     {
         $this->data = $data;
-        $this->consignment = (new MyParcelConsignment())->setApiKey($apiKey);
+        $this->consignment = $consignment;
 
         $this
             ->baseOptions()
@@ -67,8 +69,8 @@ private function baseOptions()
             ->setPostalCode($recipient['postal_code'])
             ->setStreet($recipient['street'])
             ->setCity($recipient['city'])
-            ->setEmail($recipient['email'])
-            ->setPhone($recipient['phone'])
+            ->setEmail( isset($recipient['email']) ? $recipient['email'] : '')
+            ->setPhone( isset($recipient['phone']) ? $recipient['phone'] : '')
             ->setPackageType($options['package_type'])
             ->setLabelDescription(isset($options['label_description']) ? $options['label_description'] : '')
         ;
diff --git a/src/Helper/MyParcelCollection.php b/src/Helper/MyParcelCollection.php
index a1c66ebf..94516c9b 100644
--- a/src/Helper/MyParcelCollection.php
+++ b/src/Helper/MyParcelCollection.php
@@ -175,6 +175,46 @@ public function addConsignment(MyParcelConsignment $consignment)
         return $this;
     }
 
+    /**
+     * @param int[] $ids
+     * @param sting $apiKey
+     *
+     * @return self
+     * @throws \Exception
+     */
+    public function addConsignmentByConsignmentIds($ids, $apiKey)
+    {
+        foreach ($ids as $consignmentId) {
+            $consignment = (new MyParcelConsignment())
+                ->setApiKey($apiKey)
+                ->setMyParcelConsignmentId($consignmentId);
+
+            $this->addConsignment($consignment);
+        }
+
+        return $this;
+    }
+
+    /**
+     * @param string[] $ids
+     * @param string $apiKey
+     *
+     * @return self
+     * @throws \Exception
+     */
+    public function addConsignmentByReferenceIds($ids, $apiKey)
+    {
+        foreach ($ids as $referenceId) {
+            $consignment = (new MyParcelConsignment())
+                ->setApiKey($apiKey)
+                ->setReferenceId($referenceId);
+
+            $this->addConsignment($consignment);
+        }
+
+        return $this;
+    }
+
     /**
      * @param MyParcelConsignment $consignment
      * @param $amount
@@ -185,9 +225,11 @@ public function addMultiCollo(MyParcelConsignment $consignment, $amount): self
     {
         $i = 1;
 
-        $consignment->setMultiCollo();
+        if ($amount > 1) {
+            $consignment->setMultiCollo();
+        }
 
-        if (null == $consignment->getReferenceId()) {
+        if ($consignment->isPartOfMultiCollo() && null == $consignment->getReferenceId()) {
             $consignment->setReferenceId('random_multi_collo_' . uniqid());
         }
 
@@ -320,7 +362,7 @@ public function setLatestDataWithoutIds($key, $size = 300)
         }
 
         foreach ($request->getResult()['data']['shipments'] as $shipment) {
-            $consignmentAdapter = new ConsignmentAdapter($shipment, $key);
+            $consignmentAdapter = new ConsignmentAdapter($shipment, (new MyParcelConsignment())->setApiKey($key));
             $this->addConsignment($consignmentAdapter->getConsignment());
         }
 
@@ -545,7 +587,7 @@ public function getUserAgent()
      * @param string $platform
      * @param string $version
      * @internal param string $user_agent
-     * @return $this
+     * @return self
      */
     public function setUserAgent($platform, $version = null)
     {
@@ -603,14 +645,14 @@ private function getNewCollectionFromResult($result)
                 $consignments = $this->getConsignmentsByReferenceId($shipment['reference_identifier']);
             }
 
-            $consignmentAdapter = new ConsignmentAdapter($shipment, $consignments->first()->getApiKey());
+            $consignmentAdapter = new ConsignmentAdapter($shipment, $consignments->first());
             $isMultiCollo       = ! empty($shipment['secondary_shipments']);
             $newCollection->addConsignment($consignmentAdapter->getConsignment()->setMultiCollo($isMultiCollo));
 
             foreach ($shipment['secondary_shipments'] as $secondaryShipment) {
 
                 $secondaryShipment  = Arr::arrayMergeRecursiveDistinct($shipment, $secondaryShipment);
-                $consignmentAdapter = new ConsignmentAdapter($secondaryShipment, $this->getConsignmentsByReferenceId($secondaryShipment['reference_identifier']));
+                $consignmentAdapter = new ConsignmentAdapter($secondaryShipment, $this->getConsignmentsByReferenceId($secondaryShipment['reference_identifier'])->first());
                 $newCollection->addConsignment($consignmentAdapter->getConsignment()->setMultiCollo($isMultiCollo));
 
             }
diff --git a/src/Model/MyParcelConsignment.php b/src/Model/MyParcelConsignment.php
index 74d9b67f..42a0151a 100755
--- a/src/Model/MyParcelConsignment.php
+++ b/src/Model/MyParcelConsignment.php
@@ -381,9 +381,14 @@ public function getApiKey()
      * @param string $apiKey
      *
      * @return $this
+     * @throws \Exception
      */
     public function setApiKey($apiKey)
     {
+        if (! is_string($apiKey)) {
+            throw new \Exception('Api key need to be a type of sting');
+        }
+
         $this->api_key = $apiKey;
 
         return $this;