diff --git a/lib/pbench/server/api/resources/query_apis/__init__.py b/lib/pbench/server/api/resources/query_apis/__init__.py
index b9d0f0444f..a8baf0666b 100644
--- a/lib/pbench/server/api/resources/query_apis/__init__.py
+++ b/lib/pbench/server/api/resources/query_apis/__init__.py
@@ -463,11 +463,17 @@ def _post(self, json_data: JSON, _) -> Response:
         """
         Perform the requested POST operation, and handle any exceptions.
 
-        NOTE: This is called by the ApiBase post() method through its dispatch
+        This is called by the ApiBase post() method through its dispatch
         method, which provides parameter validation.
 
+        NOTE: This method relies on the "controller" and "name" JSON parameters
+        being part of the API Schema defined by any subclass that extends this
+        base class. (This is checked by the constructor.)
+
         Args:
             json_data: Type-normalized client JSON input
+                controller: Dataset controller name
+                name: Dataset name
             _: Original incoming Request object (not used)
 
         Returns: