diff --git a/src/Client/Client.php b/src/Client/Client.php
index 46d352a..d41b4d2 100644
--- a/src/Client/Client.php
+++ b/src/Client/Client.php
@@ -28,6 +28,10 @@ public function __construct(
      */
     public function upsertContacts(array $body): void
     {
+        if (empty($body)) {
+            return;
+        }
+
         $response = $this->client->sendRequest(
             $this->requestFactory->createRequest(
                 'POST',
@@ -49,6 +53,10 @@ public function upsertContacts(array $body): void
      */
     public function upsertProducts(array $body): void
     {
+        if (empty($body)) {
+            return;
+        }
+
         $response = $this->client->sendRequest(
             $this->requestFactory->createRequest(
                 'POST',
@@ -72,6 +80,10 @@ public function upsertProducts(array $body): void
      */
     public function upsertOrders(array $body): void
     {
+        if (empty($body)) {
+            return;
+        }
+
         $response = $this->client->sendRequest(
             $this->requestFactory->createRequest(
                 'POST',
@@ -210,6 +222,10 @@ private function processResponse(ResponseInterface $response): void
      */
     public function upsertDeals(array $body): void
     {
+        if (empty($body)) {
+            return;
+        }
+
         $response = $this->client->sendRequest(
             $this->requestFactory->createRequest(
                 'POST',