diff --git a/schemas/data-ingress/knowledgebase/kb-stations.json b/schemas/data-ingress/knowledgebase/kb-stations.json
index ce4d534..a8fddbe 100644
--- a/schemas/data-ingress/knowledgebase/kb-stations.json
+++ b/schemas/data-ingress/knowledgebase/kb-stations.json
@@ -55,6 +55,7 @@
                         "type": "object",
                         "name": "Address",
                         "description": "The address of the station",
+                        "required": ["pc"],
                         "properties": {
                             "l1": {
                                 "type": "string",
@@ -86,6 +87,7 @@
                         "type": "object",
                         "name": "Location",
                         "description": "LatLon of the station",
+                        "required": ["lt", "ln"],
                         "properties": {
                             "lt": {
                                 "type": "number",
@@ -127,7 +129,8 @@
         "service_id",
         "data_type",
         "data_kind",
-        "sent_timestamp"
+        "sent_timestamp",
+        "payload"
     ],
     "additionalProperties": false
 }
\ No newline at end of file