diff --git a/netmap/types.proto b/netmap/types.proto
index a9b00fd..c1b2357 100644
--- a/netmap/types.proto
+++ b/netmap/types.proto
@@ -160,6 +160,8 @@ message NodeInfo {
   //   Country code in
   //   [ISO 3166-1_alpha-2](https://en.wikipedia.org/wiki/ISO_3166-1_alpha-2)
   //   format. Calculated automatically from `Locode` attribute
+  // * LocationCode \
+  //   TODO: write description.
   // * Region \
   //   Country's administative subdivision where node is located. Calculated
   //   automatically from `Locode` attribute based on `SubDiv` field. Presented