Added notes about Marketplace integration

Author: yegu

articles/azure-cache-for-redis/quickstart-create-redis-enterprise.md

@@ -22,7 +22,12 @@ There isn't any cost for joining the preview. Register through the [Azure Market
 You'll need an Azure subscription before you begin. If you don't have one, create a free account [create one for free](https://azure.microsoft.com/free/) first.
 
 ## Create a cache
-1. To create a cache, sign in to the Azure portal using the link in your preview invitation and select **Create a resource**. 
+1. To create a cache, sign in to the Azure portal using the link in your preview invitation and select **Create a resource**.
+
+   > [!IMPORTANT] 
+   > Don't subscribe to *Azure Cache for Redis, Enterprise Tiers* in the Marketplace directly.
+   > This step is performed by the Azure Cache for Redis portal UI automatically.
+   >
    
 1. On the **New** page, select **Databases** and then select **Azure Cache for Redis**.
 
@@ -67,6 +72,12 @@ You'll need an Azure subscription before you begin. If you don't have one, creat
 
    It takes some time for the cache to create. You can monitor progress on the Azure Cache for Redis **Overview** page. When **Status** shows as **Running**, the cache is ready to use.
 
+   > [!NOTE] 
+   > Some time after the Enterprise tier cache is created, you'll receive an **Action required**
+   > email from Azure Marketplace to configure *Azure Cache for Redis, Enterprise Tiers*. This
+   > action isn't needed. You can safely ignore that email.
+   >
+
 ## Next steps
 
 In this quickstart, you learned how to create an Enterprise tier instance of Azure Cache for Redis.