diff --git a/rfc/rfc-2/Entity-key-encoding-for-kv-store.md b/rfc/rfc-2/Entity-key-encoding-for-kv-store-deprecated.md
similarity index 96%
rename from rfc/rfc-2/Entity-key-encoding-for-kv-store.md
rename to rfc/rfc-2/Entity-key-encoding-for-kv-store-deprecated.md
index 7de06eb1af0..ebd75d30868 100644
--- a/rfc/rfc-2/Entity-key-encoding-for-kv-store.md
+++ b/rfc/rfc-2/Entity-key-encoding-for-kv-store-deprecated.md
@@ -17,13 +17,19 @@
   under the License.
 -->
 
-# RFC-1: Entity Key Encoding design for KV store
+# RFC-1: Entity Key Encoding design for KV store (deprecated)
 
 | Revision | Owner |  Date |
 | :------- |-------| ------|
 | v0.1     | Qi Yu | 1/8/2023|
 | v0.2     | Qi Yu | 5/9/2023|
 
+## ⚠️ DEPRECATED
+
+This document is no longer maintained and may contain outdated information.
+
+Deprecated on: 2024-11
+
 ## Background
 Currently, there will be many data to storage, for example, 
 User information. Such as username, password, user property, this data is structure data