diff --git a/api-ref/source/os-instance-actions.inc b/api-ref/source/os-instance-actions.inc
index d114fa7f35b4..99045499c0de 100644
--- a/api-ref/source/os-instance-actions.inc
+++ b/api-ref/source/os-instance-actions.inc
@@ -63,8 +63,9 @@ Shows details for a server action.
 Action details of deleted instances can be returned for requests later
 than microversion 2.21.
 
-Policy defaults enable only users with the administrative role to perform this operation.
-Cloud providers can change these permissions through the ``policy.json`` file.
+Policy defaults enable only users with the administrative role or the owner of
+the server to perform this operation. Cloud providers can change these permissions
+through the ``policy.json`` file.
 
 Normal response codes: 200
 
diff --git a/api-ref/source/parameters.yaml b/api-ref/source/parameters.yaml
index d646ad29e98a..49e3ecfeca2b 100644
--- a/api-ref/source/parameters.yaml
+++ b/api-ref/source/parameters.yaml
@@ -3098,8 +3098,12 @@ injectNetworkInfo:
 instance_action_events:
   description: |
     The events occurred in this action.
+
+    Policy defaults enable only users with the administrative role to see
+    instance action event information. Cloud providers can change these
+    permissions through the ``policy.json`` file.
   in: body
-  required: true
+  required: false
   type: array
 instance_id_body:
   description: |