diff --git a/app/code/Magento/Webapi/Controller/Rest.php b/app/code/Magento/Webapi/Controller/Rest.php
index 6f31d332bc2ac..99e2be67d3347 100644
--- a/app/code/Magento/Webapi/Controller/Rest.php
+++ b/app/code/Magento/Webapi/Controller/Rest.php
@@ -200,6 +200,9 @@ public function setDeploymentConfig(\Magento\Framework\App\DeploymentConfig $dep
     /**
      * Handle REST request
      *
+     * Based on request decide is it schema request or API request and process accordingly.
+     * Throws Exception in case if cannot be processed properly.
+     *
      * @param \Magento\Framework\App\RequestInterface $request
      * @return \Magento\Framework\App\ResponseInterface
      */