diff --git a/consumer/nf_discovery.go b/consumer/nf_discovery.go
index 4cb807a..6468368 100644
--- a/consumer/nf_discovery.go
+++ b/consumer/nf_discovery.go
@@ -51,11 +51,15 @@ var SendNfDiscoveryToNrf = func(nrfUri string, targetNfType, requesterNfType mod
 	if res != nil && res.StatusCode == http.StatusTemporaryRedirect {
 		err = fmt.Errorf("temporary redirect for non NRF consumer")
 	}
-	defer func() {
-		if bodyCloseErr := res.Body.Close(); bodyCloseErr != nil {
-			err = fmt.Errorf("SearchNFInstances' response body cannot close: %w", bodyCloseErr)
-		}
-	}()
+	if res != nil && res.Body != nil {
+		defer func() {
+			if bodyCloseErr := res.Body.Close(); bodyCloseErr != nil {
+				err = fmt.Errorf("SearchNFInstances' response body cannot close: %w", bodyCloseErr)
+			}
+		}()
+	} else {
+		logger.ConsumerLog.Error("Response nil from NRF for SearchNFInstances")
+	}
 
 	udmSelf := udmContext.UDM_Self()
 	var nrfSubData models.NrfSubscriptionData
@@ -82,6 +86,7 @@ var SendNfDiscoveryToNrf = func(nrfUri string, targetNfType, requesterNfType mod
 }
 
 func SendNFInstancesUDR(id string, types int) string {
+	logger.ConsumerLog.Infof("Sending NRF discovery for SUPI=%s", id)
 	self := udmContext.UDM_Self()
 	targetNfType := models.NfType_UDR
 	requestNfType := models.NfType_UDM
diff --git a/go.mod b/go.mod
index 4bcd925..edd5483 100644
--- a/go.mod
+++ b/go.mod
@@ -3,7 +3,6 @@ module github.com/omec-project/udm
 go 1.24.0
 
 require (
-	github.com/5GC-DEV/openapi-cdac v0.4.1
 	github.com/antihax/optional v1.0.0
 	github.com/gin-gonic/gin v1.10.1
 	github.com/google/uuid v1.6.0
@@ -17,6 +16,7 @@ require (
 )
 
 require (
+	github.com/5GC-DEV/openapi-cdac v0.4.2 // indirect
 	github.com/asaskevich/govalidator v0.0.0-20230301143203-a9d515a09cc2 // indirect
 	github.com/beorn7/perks v1.0.1 // indirect
 	github.com/bytedance/sonic v1.13.3 // indirect
diff --git a/go.sum b/go.sum
index 7ecd212..4cf8499 100644
--- a/go.sum
+++ b/go.sum
@@ -1,5 +1,5 @@
-github.com/5GC-DEV/openapi-cdac v0.4.1 h1:EFGYKz6D+k2tI4fEvSDAJseVo3amgoZEK3tVrp5znec=
-github.com/5GC-DEV/openapi-cdac v0.4.1/go.mod h1:KLX5UeLe67E9SQC/vVNArCa4KK4luoDNAS0kRGkdE74=
+github.com/5GC-DEV/openapi-cdac v0.4.2 h1:nHHusGmBkFOqjyJgvf8JOlJ2GlrF71aFD+HRzjGg904=
+github.com/5GC-DEV/openapi-cdac v0.4.2/go.mod h1:KLX5UeLe67E9SQC/vVNArCa4KK4luoDNAS0kRGkdE74=
 github.com/5GC-DEV/openapi-cdac v1.0.0/go.mod h1:TFxV/NlwA7waEk3BqH6baTQ8oWpPMRDFC1YCEpPjl04=
 github.com/antihax/optional v1.0.0 h1:xK2lYat7ZLaVVcIuj82J8kIro4V6kDe0AUDFboUCwcg=
 github.com/antihax/optional v1.0.0/go.mod h1:uupD/76wgC+ih3iEmQUL+0Ugr19nfwCT1kdvxnR2qWY=