diff --git a/pkg/techprofile/tech_profile_if.go b/pkg/techprofile/tech_profile_if.go
index e605d49..8391a5b 100644
--- a/pkg/techprofile/tech_profile_if.go
+++ b/pkg/techprofile/tech_profile_if.go
@@ -26,8 +26,8 @@
 type TechProfileIf interface {
 	SetKVClient() *db.Backend
 	GetTechProfileInstanceKVPath(techProfiletblID uint32, uniPortName string) string
-	GetTPInstanceFromKVStore(ctx context.Context, techProfiletblID uint32, path string) (*TechProfile, error)
-	CreateTechProfInstance(ctx context.Context, techProfiletblID uint32, uniPortName string, intfId uint32) (*TechProfile, error)
+	GetTPInstanceFromKVStore(ctx context.Context, techProfiletblID uint32, path string) (interface{}, error)
+	CreateTechProfInstance(ctx context.Context, techProfiletblID uint32, uniPortName string, intfId uint32) (interface{}, error)
 	DeleteTechProfileInstance(ctx context.Context, techProfiletblID uint32, uniPortName string) error
 	GetprotoBufParamValue(paramType string, paramKey string) int32
 	GetUsScheduler(tpInstance *TechProfile) (*tp_pb.SchedulerConfig, error)
@@ -36,6 +36,6 @@
 		ShapingCfg *tp_pb.TrafficShapingInfo) *tp_pb.TrafficScheduler
 	GetTrafficQueues(tp *TechProfile, Dir tp_pb.Direction) ([]*tp_pb.TrafficQueue, error)
 	GetMulticastTrafficQueues(tp *TechProfile) []*tp_pb.TrafficQueue
-	GetGemportIDForPbit(tp *TechProfile, Dir tp_pb.Direction, pbit uint32) uint32
-	FindAllTpInstances(ctx context.Context, techProfiletblID uint32, ponIntf uint32, onuID uint32) []TechProfile
+	GetGemportIDForPbit(tp interface{}, Dir tp_pb.Direction, pbit uint32) uint32
+	FindAllTpInstances(ctx context.Context, techProfiletblID uint32, ponIntf uint32, onuID uint32) interface{}
 }