diff --git a/pkg/gce-pd-csi-driver/controller.go b/pkg/gce-pd-csi-driver/controller.go
index 1bcfdf253..7d9a2db20 100644
--- a/pkg/gce-pd-csi-driver/controller.go
+++ b/pkg/gce-pd-csi-driver/controller.go
@@ -326,7 +326,9 @@ func (gceCS *GCEControllerServer) CreateVolume(ctx context.Context, req *csi.Cre
 
 	err = validateStoragePools(req, params, gceCS.CloudProvider.GetDefaultProject())
 	if err != nil {
-		return nil, status.Errorf(codes.InvalidArgument, "CreateVolume failed to validate storage pools: %v", err)
+		// Reassign error so that all errors are reported as InvalidArgument to RecordOperationErrorMetrics.
+		err = status.Errorf(codes.InvalidArgument, "CreateVolume failed to validate storage pools: %v", err)
+		return nil, err
 	}
 
 	// Verify that the regional availability class is only used on regional disks.