diff --git a/errormdl/errorcodemdl.go b/errormdl/errorcodemdl.go
index ee113b9dfd34445dd01ece4097b23d1ee36e2481..918f111d4f0957bfc395733d0e3c3e3d829399dc 100644
--- a/errormdl/errorcodemdl.go
+++ b/errormdl/errorcodemdl.go
@@ -15,6 +15,7 @@ const (
 	CONDITIONPARSEERROR = 1007
 	CONDITIONEVALERROR  = 1008
 	NEXTFORMEVALERROR   = 1009
+	MARSHALERR          = 3001
 
 	// DB Errors
 	MONGOERROR     = 2001
diff --git a/servicebuildermdl/servicebuildermdl.go b/servicebuildermdl/servicebuildermdl.go
index 573c7b98c4f074a6ff5c1131bd64e12c1eeb9680..cfc0d6ec1469190a9d62af98b24d5ef8d39b4c2a 100644
--- a/servicebuildermdl/servicebuildermdl.go
+++ b/servicebuildermdl/servicebuildermdl.go
@@ -119,7 +119,7 @@ type AbstractBusinessLogicHolder struct {
 	Metadata          MetaData
 }
 type MetaData struct {
-	Header http.Header
+	Header http.Header `json:"headers"`
 }
 
 // SetGlobalConfig - SetGlobalConfig