diff --git a/internal/sbi/consumer/nrf_service.go b/internal/sbi/consumer/nrf_service.go
index dc65887..a1b644d 100644
--- a/internal/sbi/consumer/nrf_service.go
+++ b/internal/sbi/consumer/nrf_service.go
@@ -124,12 +124,12 @@ func (s *nnrfService) SendNFIntancesUDR(id string, types int) string {
 	return ""
 }
 
-func (s *nnrfService) SendDeregisterNFInstance() (problemDetails *models.ProblemDetails, err error) {
+func (s *nnrfService) SendDeregisterNFInstance() (err error) {
 	logger.ConsumerLog.Infof("Send Deregister NFInstance")
 
-	ctx, pd, err := udm_context.GetSelf().GetTokenCtx(models.ServiceName_NNRF_NFM, models.NrfNfManagementNfType_NRF)
+	ctx, _, err := udm_context.GetSelf().GetTokenCtx(models.ServiceName_NNRF_NFM, models.NrfNfManagementNfType_NRF)
 	if err != nil {
-		return pd, err
+		return err
 	}
 
 	udmContext := s.consumer.Context()
@@ -137,17 +137,9 @@ func (s *nnrfService) SendDeregisterNFInstance() (problemDetails *models.Problem
 
 	var derigisterNfInstanceRequest Nnrf_NFManagement.DeregisterNFInstanceRequest
 	derigisterNfInstanceRequest.NfInstanceID = &udmContext.NfId
-	res, err := client.NFInstanceIDDocumentApi.DeregisterNFInstance(ctx, &derigisterNfInstanceRequest)
-
-	if err == nil {
-		return problemDetails, err
-	} else if res != nil {
-		problem := err.(openapi.GenericOpenAPIError).Model().(models.ProblemDetails)
-		problemDetails = &problem
-	} else {
-		err = openapi.ReportError("server no response")
-	}
-	return problemDetails, err
+	_, err = client.NFInstanceIDDocumentApi.DeregisterNFInstance(ctx, &derigisterNfInstanceRequest)
+
+	return err
 }
 
 func (s *nnrfService) RegisterNFInstance(ctx context.Context) (
diff --git a/pkg/service/init.go b/pkg/service/init.go
index a844682..add4c81 100644
--- a/pkg/service/init.go
+++ b/pkg/service/init.go
@@ -9,6 +9,8 @@ import (
 
 	"github.com/sirupsen/logrus"
 
+	"github.com/free5gc/openapi"
+	"github.com/free5gc/openapi/nrf/NFManagement"
 	udm_context "github.com/free5gc/udm/internal/context"
 	"github.com/free5gc/udm/internal/logger"
 	"github.com/free5gc/udm/internal/sbi"
@@ -147,14 +149,24 @@ func (a *UdmApp) terminateProcedure() {
 	a.CallServerStop()
 
 	// deregister with NRF
-	problemDetails, err := a.Consumer().SendDeregisterNFInstance()
-	if problemDetails != nil {
-		logger.MainLog.Errorf("Deregister NF instance Failed Problem[%+v]", problemDetails)
-	} else if err != nil {
-		logger.MainLog.Errorf("Deregister NF instance Error[%+v]", err)
-	} else {
-		logger.MainLog.Infof("Deregister from NRF successfully")
+	err := a.Consumer().SendDeregisterNFInstance()
+	if err != nil {
+		switch apiErr := err.(type) {
+		case openapi.GenericOpenAPIError:
+			switch errModel := apiErr.Model().(type) {
+			case NFManagement.DeregisterNFInstanceError:
+				pd := &errModel.ProblemDetails
+				logger.InitLog.Errorf("Deregister NF instance Failed Problem[%+v]", pd)
+			case error:
+				logger.InitLog.Errorf("Deregister NF instance Error[%+v]", err)
+			}
+		case error:
+			logger.InitLog.Errorf("Deregister NF instance Error[%+v]", err)
+		}
 	}
+
+	logger.InitLog.Infof("Deregister from NRF successfully")
+
 	logger.MainLog.Infof("UDM SBI Server terminated")
 }