diff --git a/include/ipmid/sessiondef.hpp b/include/ipmid/sessiondef.hpp
index 48ee4c6..7802fb9 100644
--- a/include/ipmid/sessiondef.hpp
+++ b/include/ipmid/sessiondef.hpp
@@ -32,7 +32,8 @@
 static constexpr uint8_t maxNetworkInstanceSupported = 4;
 static constexpr uint8_t ccInvalidSessionId = 0x87;
 static constexpr uint8_t ccInvalidSessionHandle = 0x88;
-
+static constexpr uint8_t searchSessionByHandle = 0xFE;
+static constexpr uint8_t searchSessionById = 0xFF;
 // MSB BIT 7 BIT 6 assigned for netipmid instance in session handle.
 static constexpr uint8_t multiIntfaceSessionHandleMask = 0x3F;