diff --git a/schema/common/consts.go b/schema/common/consts.go
index dabd936..5077a32 100644
--- a/schema/common/consts.go
+++ b/schema/common/consts.go
@@ -6,4 +6,6 @@ const (
 	PropertyKeyFrostFSSourceIP = "frostfs:sourceIP"
 
 	PropertyKeyFormatFrostFSIDUserClaim = "frostfsid:userClaim/%s"
+
+	PropertyKeyFrostFSXHeader = "frostfs:xheader/%s"
 )