diff --git a/go.mod b/go.mod
index 03271506..f1ca7d63 100644
--- a/go.mod
+++ b/go.mod
@@ -86,6 +86,7 @@ require (
 	github.com/oklog/ulid v1.3.1 // indirect
 	github.com/opencontainers/go-digest v1.0.0 // indirect
 	github.com/opencontainers/selinux v1.10.0 // indirect
+	github.com/pierrre/gotestcover v0.0.0-20160517101806-924dca7d15f0 // indirect
 	github.com/pkg/errors v0.9.1 // indirect
 	github.com/pmezard/go-difflib v1.0.0 // indirect
 	github.com/prometheus/client_model v0.3.0 // indirect
diff --git a/go.sum b/go.sum
index e07c970c..e28a4942 100644
--- a/go.sum
+++ b/go.sum
@@ -372,6 +372,8 @@ github.com/opencontainers/go-digest v1.0.0/go.mod h1:0JzlMkj0TRzQZfJkVvzbP0HBR3I
 github.com/opencontainers/selinux v1.10.0 h1:rAiKF8hTcgLI3w0DHm6i0ylVVcOrlgR1kK99DRLDhyU=
 github.com/opencontainers/selinux v1.10.0/go.mod h1:2i0OySw99QjzBBQByd1Gr9gSjvuho1lHsJxIJ3gGbJI=
 github.com/peterbourgon/diskv v2.0.1+incompatible/go.mod h1:uqqh8zWWbv1HBMNONnaR/tNboyR3/BZd58JJSHlUSCU=
+github.com/pierrre/gotestcover v0.0.0-20160517101806-924dca7d15f0 h1:i5VIxp6QB8oWZ8IkK8zrDgeT6ORGIUeiN+61iETwJbI=
+github.com/pierrre/gotestcover v0.0.0-20160517101806-924dca7d15f0/go.mod h1:4xpMLz7RBWyB+ElzHu8Llua96TRCB3YwX+l5EP1wmHk=
 github.com/pkg/diff v0.0.0-20210226163009-20ebb0f2a09e/go.mod h1:pJLUxLENpZxwdsKMEsNbx1VGcRFpLqf3715MtcvvzbA=
 github.com/pkg/errors v0.8.0/go.mod h1:bwawxfHBFNV+L2hUp1rHADufV3IMtnDRdf1r5NINEl0=
 github.com/pkg/errors v0.8.1/go.mod h1:bwawxfHBFNV+L2hUp1rHADufV3IMtnDRdf1r5NINEl0=
diff --git a/pkg/messages/messages_en.go b/pkg/messages/messages_en.go
index f72f9fd0..520f994b 100644
--- a/pkg/messages/messages_en.go
+++ b/pkg/messages/messages_en.go
@@ -311,6 +311,18 @@ var messagesEn = map[string]Message{
 		Type:        codes.FailedPrecondition,
 		Action:      "Please check if there is any error in POD describe related with volume attach",
 	},
+	SubnetIDListNotFound: {
+        Code:        SubnetIDListNotFound,
+        Description: "Cluster subnet list 'vpc_subnet_ids' is not defined",
+        Type:        codes.FailedPrecondition,
+        Action:      "Please check if this configmap 'ibm-cloud-provider-data' really exists and if the property 'vpc_subnet_ids' contains any subnet entries. Run the command 'kubectl get configmap ibm-cloud-provider-data -n kube-system -o yaml'",
+    },
+    SubnetFindFailed: {
+        Code:        SubnetFindFailed,
+        Description: "A subnet with the specified zone '%s' and available cluster subnet list '%s' could not be found.",
+        Type:        codes.FailedPrecondition,
+        Action:      "Please check if the property 'vpc_subnet_ids' contains valid subnetIds. Please check 'kubectl get configmap ibm-cloud-provider-data -n kube-system -o yaml'.Please check 'BackendError' tag for more details",
+    },
 }
 
 // InitMessages ...
diff --git a/pkg/messages/reason_code.go b/pkg/messages/reason_code.go
index f0f6b3e6..b0f4cfb9 100644
--- a/pkg/messages/reason_code.go
+++ b/pkg/messages/reason_code.go
@@ -161,4 +161,10 @@ const (
 
 	// VolumePathNotMounted ...
 	VolumePathNotMounted = "VolumePathNotMounted"
+
+	// SubnetIDListNotFound ...
+	SubnetIDListNotFound = "SubnetIDListNotFound"
+
+	// SubnetFindFailed ...
+	SubnetFindFailed = "SubnetFindFailed"
 )