diff --git a/app/api/module/Api/src/Service/File/ContentStoreFileUploader.php b/app/api/module/Api/src/Service/File/ContentStoreFileUploader.php
index 5069a4a1c7..e74179e365 100644
--- a/app/api/module/Api/src/Service/File/ContentStoreFileUploader.php
+++ b/app/api/module/Api/src/Service/File/ContentStoreFileUploader.php
@@ -5,6 +5,7 @@
 use Dvsa\Olcs\DocumentShare\Data\Object\File as ContentStoreFile;
 use Dvsa\Olcs\DocumentShare\Service\DocumentStoreInterface;
 use Laminas\Http\Response;
+use Laminas\Log\Logger;
 use Laminas\ServiceManager\Factory\FactoryInterface;
 use Psr\Container\ContainerInterface;
 
@@ -16,13 +17,18 @@
  */
 class ContentStoreFileUploader implements FileUploaderInterface, FactoryInterface
 {
-    public const ERR_UNABLE_UPLOAD = 'Unable to store uploaded file: %s';
+    public const ERR_UNABLE_UPLOAD = 'Unable to store uploaded file: %s (HTTP status code: %s)';
 
     /**
      * @var DocumentStoreInterface
      */
     private $contentStoreClient;
 
+    /**
+     * @var Logger
+     */
+    private $logger;
+
     /**
      * Upload file to remote storage
      *
@@ -37,8 +43,12 @@ public function upload($identifier, ContentStoreFile $file)
     {
         $file->setIdentifier($identifier);
 
+        $this->logger->debug(__METHOD__, ['identifier' => $identifier, 'file' => $file]);
+
         $response = $this->write($identifier, $file);
 
+        $this->logger->debug(__METHOD__, ['response' => $response]);
+
         if ($response->isSuccess()) {
             return $file;
         }
@@ -47,7 +57,7 @@ public function upload($identifier, ContentStoreFile $file)
             throw new MimeNotAllowedException();
         }
 
-        throw new Exception(sprintf(self::ERR_UNABLE_UPLOAD, $response->getBody()));
+        throw new Exception(sprintf(self::ERR_UNABLE_UPLOAD, $response->getBody(), $response->getStatusCode()));
     }
 
     /**
@@ -89,6 +99,7 @@ private function write($identifier, ContentStoreFile $file)
     public function __invoke(ContainerInterface $container, $requestedName, array $options = null)
     {
         $this->contentStoreClient = $container->get('ContentStore');
+        $this->logger = $container->get('Logger');
         return $this;
     }
 }
diff --git a/app/api/test/module/Api/src/Service/File/ContentStoreFileUploaderTest.php b/app/api/test/module/Api/src/Service/File/ContentStoreFileUploaderTest.php
index b8adf0e538..a5b519086d 100644
--- a/app/api/test/module/Api/src/Service/File/ContentStoreFileUploaderTest.php
+++ b/app/api/test/module/Api/src/Service/File/ContentStoreFileUploaderTest.php
@@ -8,6 +8,7 @@
 use Dvsa\Olcs\DocumentShare\Data\Object\File as DsFile;
 use Dvsa\Olcs\DocumentShare\Service\WebDavClient as ContentStoreClient;
 use Laminas\Http\Response;
+use Laminas\Log\Logger;
 use Laminas\ServiceManager\ServiceManager;
 use Mockery as m;
 use Mockery\Adapter\Phpunit\MockeryTestCase;
@@ -43,6 +44,7 @@ function ($alias, $service) use ($sm) {
             );
 
         $sm->setService('ContentStore', $this->mockContentStoreCli);
+        $sm->setService('Logger', $this->createMock(Logger::class));
 
         static::assertSame($this->sut, $this->sut->__invoke($sm, null));
     }
@@ -97,12 +99,12 @@ public function testUploadFail()
         $respBody = 'unit_RespBody';
 
         $this->expectException(Exception::class);
-        $this->expectExceptionMessage(sprintf(ContentStoreFileUploader::ERR_UNABLE_UPLOAD, $respBody));
+        $this->expectExceptionMessage(sprintf(ContentStoreFileUploader::ERR_UNABLE_UPLOAD, $respBody, 500));
 
         $response = m::mock(Response::class);
         $response
             ->shouldReceive('isSuccess')->once()->andReturn(false)
-            ->shouldReceive('getStatusCode')->once()->andReturn(Response::STATUS_CODE_500)
+            ->shouldReceive('getStatusCode')->andReturn(Response::STATUS_CODE_500)
             ->shouldReceive('getBody')->once()->andReturn($respBody);
 
         $this->mockContentStoreCli->shouldReceive('write')