diff --git a/src/sandbox/data_pool.md b/src/sandbox/data_pool.md
index f5b0412..8de2c45 100644
--- a/src/sandbox/data_pool.md
+++ b/src/sandbox/data_pool.md
@@ -11,7 +11,7 @@ To store the data inside the Sandbox, you just have to drag & drop or click on t
 
 
 ## Share CLI (Headless)
-To use the headless object storage, you can upload a file via REST-Interface or curl. The json response message provides you the destination url.
+To use the headless object storage, you can upload a file via REST-Interface or curl. The json response message provides you the destination url. The upload is only available from the Sandbox.
 
 **Upload Example**
 ```python