diff --git a/output/openapi/elasticsearch-openapi.json b/output/openapi/elasticsearch-openapi.json
index 344955ce3c..8cda4cfdc9 100644
--- a/output/openapi/elasticsearch-openapi.json
+++ b/output/openapi/elasticsearch-openapi.json
@@ -15641,6 +15641,14 @@
                       "$ref": "#/components/schemas/indices._types.DownsamplingRound"
                     }
                   },
+                  "downsampling_method": {
+                    "description": "The method used to downsample the data. There are two options `aggregate` and `last_value`. It requires\n`downsampling` to be defined. Defaults to `aggregate`.",
+                    "allOf": [
+                      {
+                        "$ref": "#/components/schemas/indices._types.SamplingMethod"
+                      }
+                    ]
+                  },
                   "enabled": {
                     "description": "If defined, it turns data stream lifecycle on/off (`true`/`false`) for this data stream. A data stream lifecycle\nthat's disabled (enabled: `false`) will have no effect on the data stream.",
                     "default": true,
@@ -88389,10 +88397,17 @@
             ]
           },
           "downsampling": {
-            "description": "The downsampling configuration to execute for the managed backing index after rollover.",
+            "description": "The list of downsampling rounds to execute as part of this downsampling configuration",
+            "type": "array",
+            "items": {
+              "$ref": "#/components/schemas/indices._types.DownsamplingRound"
+            }
+          },
+          "downsampling_method": {
+            "description": "The method used to downsample the data. There are two options `aggregate` and `last_value`. It requires\n`downsampling` to be defined. Defaults to `aggregate`.",
             "allOf": [
               {
-                "$ref": "#/components/schemas/indices._types.DataStreamLifecycleDownsampling"
+                "$ref": "#/components/schemas/indices._types.SamplingMethod"
               }
             ]
           },
@@ -88403,21 +88418,6 @@
           }
         }
       },
-      "indices._types.DataStreamLifecycleDownsampling": {
-        "type": "object",
-        "properties": {
-          "rounds": {
-            "description": "The list of downsampling rounds to execute as part of this downsampling configuration",
-            "type": "array",
-            "items": {
-              "$ref": "#/components/schemas/indices._types.DownsamplingRound"
-            }
-          }
-        },
-        "required": [
-          "rounds"
-        ]
-      },
       "indices._types.DownsamplingRound": {
         "type": "object",
         "properties": {
@@ -88443,6 +88443,13 @@
           "fixed_interval"
         ]
       },
+      "indices._types.SamplingMethod": {
+        "type": "string",
+        "enum": [
+          "aggregate",
+          "last_value"
+        ]
+      },
       "indices._types.DataStreamOptionsTemplate": {
         "description": "Data stream options template contains the same information as DataStreamOptions but allows them to be set explicitly to null.",
         "type": "object",
@@ -97161,13 +97168,6 @@
           "fixed_interval"
         ]
       },
-      "indices._types.SamplingMethod": {
-        "type": "string",
-        "enum": [
-          "aggregate",
-          "last_value"
-        ]
-      },
       "indices.explain_data_lifecycle.DataStreamLifecycleExplain": {
         "type": "object",
         "properties": {
diff --git a/output/openapi/elasticsearch-serverless-openapi.json b/output/openapi/elasticsearch-serverless-openapi.json
index 68d188a72e..e3a61a9289 100644
--- a/output/openapi/elasticsearch-serverless-openapi.json
+++ b/output/openapi/elasticsearch-serverless-openapi.json
@@ -9283,6 +9283,14 @@
                       "$ref": "#/components/schemas/indices._types.DownsamplingRound"
                     }
                   },
+                  "downsampling_method": {
+                    "description": "The method used to downsample the data. There are two options `aggregate` and `last_value`. It requires\n`downsampling` to be defined. Defaults to `aggregate`.",
+                    "allOf": [
+                      {
+                        "$ref": "#/components/schemas/indices._types.SamplingMethod"
+                      }
+                    ]
+                  },
                   "enabled": {
                     "description": "If defined, it turns data stream lifecycle on/off (`true`/`false`) for this data stream. A data stream lifecycle\nthat's disabled (enabled: `false`) will have no effect on the data stream.",
                     "default": true,
@@ -60600,10 +60608,17 @@
             ]
           },
           "downsampling": {
-            "description": "The downsampling configuration to execute for the managed backing index after rollover.",
+            "description": "The list of downsampling rounds to execute as part of this downsampling configuration",
+            "type": "array",
+            "items": {
+              "$ref": "#/components/schemas/indices._types.DownsamplingRound"
+            }
+          },
+          "downsampling_method": {
+            "description": "The method used to downsample the data. There are two options `aggregate` and `last_value`. It requires\n`downsampling` to be defined. Defaults to `aggregate`.",
             "allOf": [
               {
-                "$ref": "#/components/schemas/indices._types.DataStreamLifecycleDownsampling"
+                "$ref": "#/components/schemas/indices._types.SamplingMethod"
               }
             ]
           },
@@ -60614,21 +60629,6 @@
           }
         }
       },
-      "indices._types.DataStreamLifecycleDownsampling": {
-        "type": "object",
-        "properties": {
-          "rounds": {
-            "description": "The list of downsampling rounds to execute as part of this downsampling configuration",
-            "type": "array",
-            "items": {
-              "$ref": "#/components/schemas/indices._types.DownsamplingRound"
-            }
-          }
-        },
-        "required": [
-          "rounds"
-        ]
-      },
       "indices._types.DownsamplingRound": {
         "type": "object",
         "properties": {
@@ -60654,6 +60654,13 @@
           "fixed_interval"
         ]
       },
+      "indices._types.SamplingMethod": {
+        "type": "string",
+        "enum": [
+          "aggregate",
+          "last_value"
+        ]
+      },
       "indices._types.DataStreamOptionsTemplate": {
         "description": "Data stream options template contains the same information as DataStreamOptions but allows them to be set explicitly to null.",
         "type": "object",
diff --git a/output/schema/schema.json b/output/schema/schema.json
index 10d5e4bda2..3556251033 100644
--- a/output/schema/schema.json
+++ b/output/schema/schema.json
@@ -149197,13 +149197,28 @@
           }
         },
         {
-          "description": "The downsampling configuration to execute for the managed backing index after rollover.",
+          "description": "The list of downsampling rounds to execute as part of this downsampling configuration",
           "name": "downsampling",
           "required": false,
+          "type": {
+            "kind": "array_of",
+            "value": {
+              "kind": "instance_of",
+              "type": {
+                "name": "DownsamplingRound",
+                "namespace": "indices._types"
+              }
+            }
+          }
+        },
+        {
+          "description": "The method used to downsample the data. There are two options `aggregate` and `last_value`. It requires\n`downsampling` to be defined. Defaults to `aggregate`.",
+          "name": "downsampling_method",
+          "required": false,
           "type": {
             "kind": "instance_of",
             "type": {
-              "name": "DataStreamLifecycleDownsampling",
+              "name": "SamplingMethod",
               "namespace": "indices._types"
             }
           }
@@ -149222,32 +149237,7 @@
           }
         }
       ],
-      "specLocation": "indices/_types/DataStreamLifecycle.ts#L25-L45"
-    },
-    {
-      "kind": "interface",
-      "name": {
-        "name": "DataStreamLifecycleDownsampling",
-        "namespace": "indices._types"
-      },
-      "properties": [
-        {
-          "description": "The list of downsampling rounds to execute as part of this downsampling configuration",
-          "name": "rounds",
-          "required": true,
-          "type": {
-            "kind": "array_of",
-            "value": {
-              "kind": "instance_of",
-              "type": {
-                "name": "DownsamplingRound",
-                "namespace": "indices._types"
-              }
-            }
-          }
-        }
-      ],
-      "specLocation": "indices/_types/DataStreamLifecycleDownsampling.ts#L22-L27"
+      "specLocation": "indices/_types/DataStreamLifecycle.ts#L26-L51"
     },
     {
       "kind": "interface",
@@ -149367,7 +149357,7 @@
           }
         }
       ],
-      "specLocation": "indices/_types/DataStreamLifecycle.ts#L60-L72"
+      "specLocation": "indices/_types/DataStreamLifecycle.ts#L66-L78"
     },
     {
       "kind": "interface",
@@ -149396,7 +149386,7 @@
           }
         }
       ],
-      "specLocation": "indices/_types/DataStreamLifecycle.ts#L47-L58"
+      "specLocation": "indices/_types/DataStreamLifecycle.ts#L53-L64"
     },
     {
       "kind": "interface",
@@ -163166,6 +163156,18 @@
               }
             }
           },
+          {
+            "description": "The method used to downsample the data. There are two options `aggregate` and `last_value`. It requires\n`downsampling` to be defined. Defaults to `aggregate`.",
+            "name": "downsampling_method",
+            "required": false,
+            "type": {
+              "kind": "instance_of",
+              "type": {
+                "name": "SamplingMethod",
+                "namespace": "indices._types"
+              }
+            }
+          },
           {
             "description": "If defined, it turns data stream lifecycle on/off (`true`/`false`) for this data stream. A data stream lifecycle\nthat's disabled (enabled: `false`) will have no effect on the data stream.",
             "name": "enabled",
@@ -163308,7 +163310,7 @@
           }
         }
       ],
-      "specLocation": "indices/put_data_lifecycle/IndicesPutDataLifecycleRequest.ts#L25-L93"
+      "specLocation": "indices/put_data_lifecycle/IndicesPutDataLifecycleRequest.ts#L26-L99"
     },
     {
       "kind": "response",
diff --git a/output/typescript/types.ts b/output/typescript/types.ts
index 2bf1edf279..40c5c57742 100644
--- a/output/typescript/types.ts
+++ b/output/typescript/types.ts
@@ -11882,14 +11882,11 @@ export interface IndicesDataStreamIndex {
 
 export interface IndicesDataStreamLifecycle {
   data_retention?: Duration
-  downsampling?: IndicesDataStreamLifecycleDownsampling
+  downsampling?: IndicesDownsamplingRound[]
+  downsampling_method?: IndicesSamplingMethod
   enabled?: boolean
 }
 
-export interface IndicesDataStreamLifecycleDownsampling {
-  rounds: IndicesDownsamplingRound[]
-}
-
 export interface IndicesDataStreamLifecycleRolloverConditions {
   min_age?: Duration
   max_age?: string
@@ -13158,6 +13155,7 @@ export interface IndicesPutDataLifecycleRequest extends RequestBase {
   body?: {
     data_retention?: Duration
     downsampling?: IndicesDownsamplingRound[]
+    downsampling_method?: IndicesSamplingMethod
     enabled?: boolean
   }
 }
diff --git a/specification/indices/_types/DataStreamLifecycle.ts b/specification/indices/_types/DataStreamLifecycle.ts
index a9af498a1d..35d83906d8 100644
--- a/specification/indices/_types/DataStreamLifecycle.ts
+++ b/specification/indices/_types/DataStreamLifecycle.ts
@@ -20,7 +20,8 @@
 import { ByteSize } from '@_types/common'
 import { long } from '@_types/Numeric'
 import { Duration } from '@_types/Time'
-import { DataStreamLifecycleDownsampling } from '@indices/_types/DataStreamLifecycleDownsampling'
+import { SamplingMethod } from '@indices/_types/Downsample'
+import { DownsamplingRound } from '@indices/_types/DownsamplingRound'
 
 /**
  * Data stream lifecycle denotes that a data stream is managed by the data stream lifecycle and contains the configuration.
@@ -33,9 +34,14 @@ export class DataStreamLifecycle {
    */
   data_retention?: Duration
   /**
-   * The downsampling configuration to execute for the managed backing index after rollover.
+   * The list of downsampling rounds to execute as part of this downsampling configuration
    */
-  downsampling?: DataStreamLifecycleDownsampling
+  downsampling?: DownsamplingRound[]
+  /**
+   * The method used to downsample the data. There are two options `aggregate` and `last_value`. It requires
+   * `downsampling` to be defined. Defaults to `aggregate`.
+   */
+  downsampling_method?: SamplingMethod
   /**
    * If defined, it turns data stream lifecycle on/off (`true`/`false`) for this data stream. A data stream lifecycle
    * that's disabled (enabled: `false`) will have no effect on the data stream.
diff --git a/specification/indices/_types/DataStreamLifecycleDownsampling.ts b/specification/indices/_types/DataStreamLifecycleDownsampling.ts
deleted file mode 100644
index 4aad62df47..0000000000
--- a/specification/indices/_types/DataStreamLifecycleDownsampling.ts
+++ /dev/null
@@ -1,27 +0,0 @@
-/*
- * Licensed to Elasticsearch B.V. under one or more contributor
- * license agreements. See the NOTICE file distributed with
- * this work for additional information regarding copyright
- * ownership. Elasticsearch B.V. licenses this file to you under
- * the Apache License, Version 2.0 (the "License"); you may
- * not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *    http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing,
- * software distributed under the License is distributed on an
- * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
- * KIND, either express or implied.  See the License for the
- * specific language governing permissions and limitations
- * under the License.
- */
-
-import { DownsamplingRound } from '@indices/_types/DownsamplingRound'
-
-export class DataStreamLifecycleDownsampling {
-  /**
-   * The list of downsampling rounds to execute as part of this downsampling configuration
-   */
-  rounds: DownsamplingRound[]
-}
diff --git a/specification/indices/_types/Downsample.ts b/specification/indices/_types/Downsample.ts
index 46fa228a0c..93945a0fdd 100644
--- a/specification/indices/_types/Downsample.ts
+++ b/specification/indices/_types/Downsample.ts
@@ -30,7 +30,7 @@ export class DownsampleConfig {
   sampling_method?: SamplingMethod
 }
 
-enum SamplingMethod {
+export enum SamplingMethod {
   aggregate,
   last_value
 }
diff --git a/specification/indices/put_data_lifecycle/IndicesPutDataLifecycleRequest.ts b/specification/indices/put_data_lifecycle/IndicesPutDataLifecycleRequest.ts
index 32570f3ec2..7fb4a41fd2 100644
--- a/specification/indices/put_data_lifecycle/IndicesPutDataLifecycleRequest.ts
+++ b/specification/indices/put_data_lifecycle/IndicesPutDataLifecycleRequest.ts
@@ -20,6 +20,7 @@
 import { RequestBase } from '@_types/Base'
 import { DataStreamNames, ExpandWildcards } from '@_types/common'
 import { Duration } from '@_types/Time'
+import { SamplingMethod } from '@indices/_types/Downsample'
 import { DownsamplingRound } from '@indices/_types/DownsamplingRound'
 
 /**
@@ -70,7 +71,7 @@ export interface Request extends RequestBase {
   }
   /*
    * This is DataStreamLifecycle from @indices/_types/DataStreamLifecycle.ts,
-   * but kept as a properties body to avoid a breaking change
+   * but kept as separate properties to avoid a breaking change
    */
   body: {
     /**
@@ -83,6 +84,11 @@ export interface Request extends RequestBase {
      * The downsampling configuration to execute for the managed backing index after rollover.
      */
     downsampling?: DownsamplingRound[]
+    /**
+     * The method used to downsample the data. There are two options `aggregate` and `last_value`. It requires
+     * `downsampling` to be defined. Defaults to `aggregate`.
+     */
+    downsampling_method?: SamplingMethod
     /**
      * If defined, it turns data stream lifecycle on/off (`true`/`false`) for this data stream. A data stream lifecycle
      * that's disabled (enabled: `false`) will have no effect on the data stream.