diff --git a/lib/go/common/constants.go b/lib/go/common/constants.go
index ccd8e38..c732005 100644
--- a/lib/go/common/constants.go
+++ b/lib/go/common/constants.go
@@ -54,7 +54,10 @@ const (
 	KeyRequiredNode = "requiredNode"
 
 	// Pods
-	CreationTime = "creationTime"
+	CreationTime     = "creationTime"
+	Foreign          = "foreign"
+	AllocTypeStatic  = "static"
+	AllocTypeDefault = "default"
 )
 
 // Constants for Core and Shim
diff --git a/scheduler-interface-spec.md b/scheduler-interface-spec.md
index 2a77f20..ee87236 100644
--- a/scheduler-interface-spec.md
+++ b/scheduler-interface-spec.md
@@ -682,7 +682,10 @@ const (
 	KeyRequiredNode    = "requiredNode"
 
 	// Pods
-	CreationTime    = "creationTime"
+        CreationTime     = "creationTime"
+        Foreign          = "foreign"
+        AllocTypeStatic  = "static"
+        AllocTypeDefault = "default"
 )
 ```