diff --git a/.generator/schemas/v2/openapi.yaml b/.generator/schemas/v2/openapi.yaml
index fcf5fd48e2c3..401d80971e7c 100644
--- a/.generator/schemas/v2/openapi.yaml
+++ b/.generator/schemas/v2/openapi.yaml
@@ -82474,7 +82474,10 @@ components:
             $ref: "#/components/schemas/ProductAnalyticsGroupBy"
           type: array
         indexes:
-          description: Restrict the query to specific indexes. Max 1 entry.
+          deprecated: true
+          description: |-
+            Deprecated. Index selection is a rollout detail and will be removed.
+            Do not set this field.
           items:
             description: Index name to restrict the query to.
             type: string
@@ -82512,6 +82515,10 @@ components:
       properties:
         enforced_execution_type:
           $ref: "#/components/schemas/ProductAnalyticsExecutionType"
+          deprecated: true
+          description: |-
+            Deprecated. Selects the internal query execution infrastructure and will be removed.
+            Do not set this field.
         from:
           description: Start time in epoch milliseconds. Must be less than `to`.
           example: 1771232048460
@@ -82520,7 +82527,7 @@ components:
         query:
           $ref: "#/components/schemas/ProductAnalyticsAnalyticsQuery"
         request_id:
-          description: Optional request ID for multi-step query continuation.
+          description: Unique identifier of the query.
           type: string
         to:
           description: End time in epoch milliseconds.
@@ -82633,7 +82640,9 @@ components:
           example: count
           type: string
         interval:
-          description: Time bucket size in milliseconds. Required for timeseries queries.
+          description: |-
+            Time bucket size in milliseconds. Required for timeseries queries; ignored by the
+            scalar endpoint, which returns a single value.
           example: 3600000
           format: int64
           type: integer
@@ -82796,7 +82805,7 @@ components:
       description: Metadata for a Product Analytics query response.
       properties:
         request_id:
-          description: Unique identifier for the request, used for multi-step query continuation.
+          description: Unique identifier of the query.
           type: string
         status:
           $ref: "#/components/schemas/ProductAnalyticsResponseMetaStatus"
@@ -83016,7 +83025,9 @@ components:
           $ref: "#/components/schemas/ProductAnalyticsResponseMeta"
       type: object
     ProductAnalyticsTimeseriesResponseAttributes:
-      description: Attributes of a timeseries analytics response, containing series data, timestamps, and interval definitions.
+      description: |-
+        Attributes of a timeseries analytics response, containing series data, timestamps, and
+        interval definitions.
       properties:
         intervals:
           description: Interval definitions describing the time buckets used in the response.
diff --git a/services/product_analytics/src/v2/models/ProductAnalyticsAnalyticsQuery.ts b/services/product_analytics/src/v2/models/ProductAnalyticsAnalyticsQuery.ts
index 90e0bb0d1daa..007296fcf476 100644
--- a/services/product_analytics/src/v2/models/ProductAnalyticsAnalyticsQuery.ts
+++ b/services/product_analytics/src/v2/models/ProductAnalyticsAnalyticsQuery.ts
@@ -22,7 +22,8 @@ export class ProductAnalyticsAnalyticsQuery {
    */
   "groupBy"?: Array<ProductAnalyticsGroupBy>;
   /**
-   * Restrict the query to specific indexes. Max 1 entry.
+   * Deprecated. Index selection is a rollout detail and will be removed.
+   * Do not set this field.
    */
   "indexes"?: Array<string>;
   /**
diff --git a/services/product_analytics/src/v2/models/ProductAnalyticsAnalyticsRequestAttributes.ts b/services/product_analytics/src/v2/models/ProductAnalyticsAnalyticsRequestAttributes.ts
index 343c675bcf57..beb9a3931f2a 100644
--- a/services/product_analytics/src/v2/models/ProductAnalyticsAnalyticsRequestAttributes.ts
+++ b/services/product_analytics/src/v2/models/ProductAnalyticsAnalyticsRequestAttributes.ts
@@ -20,7 +20,7 @@ export class ProductAnalyticsAnalyticsRequestAttributes {
    */
   "query": ProductAnalyticsAnalyticsQuery;
   /**
-   * Optional request ID for multi-step query continuation.
+   * Unique identifier of the query.
    */
   "requestId"?: string;
   /**
diff --git a/services/product_analytics/src/v2/models/ProductAnalyticsCompute.ts b/services/product_analytics/src/v2/models/ProductAnalyticsCompute.ts
index a6977bbc7fa8..532ad8e62f04 100644
--- a/services/product_analytics/src/v2/models/ProductAnalyticsCompute.ts
+++ b/services/product_analytics/src/v2/models/ProductAnalyticsCompute.ts
@@ -9,7 +9,8 @@ export class ProductAnalyticsCompute {
    */
   "aggregation": string;
   /**
-   * Time bucket size in milliseconds. Required for timeseries queries.
+   * Time bucket size in milliseconds. Required for timeseries queries; ignored by the
+   * scalar endpoint, which returns a single value.
    */
   "interval"?: number;
   /**
diff --git a/services/product_analytics/src/v2/models/ProductAnalyticsResponseMeta.ts b/services/product_analytics/src/v2/models/ProductAnalyticsResponseMeta.ts
index 554b4b76104d..97a120137134 100644
--- a/services/product_analytics/src/v2/models/ProductAnalyticsResponseMeta.ts
+++ b/services/product_analytics/src/v2/models/ProductAnalyticsResponseMeta.ts
@@ -7,7 +7,7 @@ import { ProductAnalyticsResponseMetaStatus } from "./ProductAnalyticsResponseMe
  */
 export class ProductAnalyticsResponseMeta {
   /**
-   * Unique identifier for the request, used for multi-step query continuation.
+   * Unique identifier of the query.
    */
   "requestId"?: string;
   /**
diff --git a/services/product_analytics/src/v2/models/ProductAnalyticsTimeseriesResponseAttributes.ts b/services/product_analytics/src/v2/models/ProductAnalyticsTimeseriesResponseAttributes.ts
index 421b848dc163..a4f70b5868dd 100644
--- a/services/product_analytics/src/v2/models/ProductAnalyticsTimeseriesResponseAttributes.ts
+++ b/services/product_analytics/src/v2/models/ProductAnalyticsTimeseriesResponseAttributes.ts
@@ -4,7 +4,8 @@ import { ProductAnalyticsInterval } from "./ProductAnalyticsInterval";
 import { ProductAnalyticsSerie } from "./ProductAnalyticsSerie";
 
 /**
- * Attributes of a timeseries analytics response, containing series data, timestamps, and interval definitions.
+ * Attributes of a timeseries analytics response, containing series data, timestamps, and
+ * interval definitions.
  */
 export class ProductAnalyticsTimeseriesResponseAttributes {
   /**
diff --git a/services/product_analytics/src/v2/models/ProductAnalyticsTimeseriesResponseData.ts b/services/product_analytics/src/v2/models/ProductAnalyticsTimeseriesResponseData.ts
index 9a5a26605a92..c915dd7191d5 100644
--- a/services/product_analytics/src/v2/models/ProductAnalyticsTimeseriesResponseData.ts
+++ b/services/product_analytics/src/v2/models/ProductAnalyticsTimeseriesResponseData.ts
@@ -8,7 +8,8 @@ import { ProductAnalyticsTimeseriesResponseType } from "./ProductAnalyticsTimese
  */
 export class ProductAnalyticsTimeseriesResponseData {
   /**
-   * Attributes of a timeseries analytics response, containing series data, timestamps, and interval definitions.
+   * Attributes of a timeseries analytics response, containing series data, timestamps, and
+   * interval definitions.
    */
   "attributes"?: ProductAnalyticsTimeseriesResponseAttributes;
   /**