diff --git a/README.md b/README.md
index bb1c6aa..e681d1d 100644
--- a/README.md
+++ b/README.md
@@ -1,17 +1,38 @@
 # plugin-azure-cost-mgmt-cost-datasource
 Plugin for collecting Azure Cost management data
 
+
 ---
+## Azure Service Endpoint(in use)
+<pre>
+https://*.blob.core.windows.net
+https://management.azure.com
+https://login.microsoftonline.com
+</pre>
 
+----
 ## Schema Data
 *Schema*
 - billing_account_id (str): 
 - tenant_id (str):
 - client_id (str):
 - client_secret (str):
+- customer_tenants (list):(Optional) Customer's tenant id list 
+
 
+*Example for EA*
+<pre>
+<code>
+{
+    "billing_account_id": "*****",
+    "tenant_id": "*****",
+    "client_id": "*****",
+    "client_secret": "*****"
+}
+</code>
+</pre>
 
-*Example*
+*Example for CSP*
 <pre>
 <code>
 {
@@ -19,6 +40,9 @@ Plugin for collecting Azure Cost management data
     "tenant_id": "*****",
     "client_id": "*****",
     "client_secret": "*****"
+    "customer_tenants":
+        - "*****"
+     
 }
 </code>
 </pre>