diff --git a/schemas/navbeaconscan-README.md b/schemas/navbeaconscan-README.md
index c12e91b..7a3bdd4 100644
--- a/schemas/navbeaconscan-README.md
+++ b/schemas/navbeaconscan-README.md
@@ -7,19 +7,22 @@ Event and properly structure it for sending to EDDN.
 Please consult [EDDN Schemas README](./README-EDDN-schemas.md) for general
 documentation for a schema such as this.
 
+If you find any discrepancies between what this document says and what is
+defined in the relevant Schema file, then you should, in the first instance,
+assume that it is the Schema file that is correct.
+**PLEASE open
+[an issue on GitHub](https://github.com/EDCD/EDDN/issues/new/choose)
+to report any such anomalies you find so that we can check and resolve the
+discrepancy.**
+
 ## Senders
 The primary data source for this schema is the ED Journal event
 `NavBeaconScan`.
 
-### Elisions
-There are no elisions in this schema.
-
 ### Augmentations
-#### horizons flag
-You SHOULD add this key/value pair, using the value from the `LoadGame` event.
-
-#### odyssey flag
-You SHOULD add this key/value pair, using the value from the `LoadGame` event.
+#### horizons and odyssey flags
+Please read [horizons and odyssey flags](../../docs/Developers.md#horizons-and-odyssey-flags)
+over in the Developers' documentation.
 
 #### StarSystem
 You MUST add a `StarSystem` key/value pair representing the name of the
diff --git a/schemas/navbeaconscan-v1.0.json b/schemas/navbeaconscan-v1.0.json
index 64d55bf..b40cfa9 100644
--- a/schemas/navbeaconscan-v1.0.json
+++ b/schemas/navbeaconscan-v1.0.json
@@ -52,7 +52,8 @@
                 },
                 "StarSystem": {
                     "type"          : "string",
-                    "minLength"     : 1
+                    "minLength"     : 1,
+                    "description"   : "Should be added by the sender if not present in the journal event"
                 },
                 "StarPos": {
                     "type"          : "array",
@@ -63,7 +64,6 @@
                 },
                 "SystemAddress": {
                     "type"          : "integer",
-                    "description"   : "Should be added by the sender if not present in the journal event"
                 },
                 "NumBodies"         : {
                     "type"          : "integer"