Merge branch 'dkua1-master-patch-9658' into 'master'

Reflect AiUsageData endpoint is available only for top-level group

See merge request https://gitlab.com/gitlab-org/gitlab/-/merge_requests/178262



Merged-by: Felipe Cardozo <fcardozo@gitlab.com>
Approved-by: Lorena Ciutacu <lciutacu@gitlab.com>
Approved-by: Felipe Cardozo <fcardozo@gitlab.com>
Reviewed-by: Lorena Ciutacu <lciutacu@gitlab.com>
Co-authored-by: Daphne Kua <dkua@gitlab.com>

doc/api/graphql/reference/_index.md

@@ -19598,7 +19598,7 @@ Self-hosted LLM servers.
 ### `AiUsageData`
-Usage data for events stored in the default PostgreSQL database. Data retained for three months. Requires a personal access token. Ultimate with GitLab Duo Enterprise only.
+Usage data for events stored in the default PostgreSQL database. Data retained for three months. Requires a personal access token. Endpoint works only on the top-level group. Ultimate with GitLab Duo Enterprise only.
 #### Fields

ee/app/graphql/types/analytics/ai_usage/ai_usage_data_type.rb

@@ -7,7 +7,7 @@ class AiUsageDataType < BaseObject
         graphql_name 'AiUsageData'
         description "Usage data for events stored in the default PostgreSQL database. " \
           "Data retained for three months. Requires a personal access token. " \
-          "Ultimate with GitLab Duo Enterprise only."
+          "Endpoint works only on the top-level group. Ultimate with GitLab Duo Enterprise only."
 
         authorize :read_enterprise_ai_analytics