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+---
+mapped_pages:
+  - https://www.elastic.co/guide/en/elasticsearch/reference/8.18/indices-put-mapping.html#put-mapping-api-example
+applies_to:
+  stack: ga
+  serverless: ga
+products:
+  - id: elasticsearch
+---
+
+# Update mapping API examples
+
+This page provides examples of how to use the [update mapping API](https://www.elastic.co/docs/api/doc/elasticsearch/operation/operation-indices-put-mapping) to modify index mappings after creation. 
+
+You can learn how to:
+
+- [Add a new field to a single index](#example-with-single-target)
+- [Update multiple indices at once](#multiple-targets)
+- [Add new properties to an object field](#add-new-properties-to-an-existing-object-field)
+- [Enable multi-fields for an existing field](#add-multi-fields-to-an-existing-field)
+- [Update supported mapping parameters](#change-supported-mapping-parameters-for-an-existing-field)
+- [Change the mapping of a field using reindexing](#change-the-mapping-of-an-existing-field)
+- [Rename a field using field aliases](#rename-a-field)
+
+## Example with single target
+
+The update mapping API requires an existing data stream or index. The following [create index](https://www.elastic.co/guide/en/elasticsearch/reference/current/indices-create-index.html) API request creates the `publications` index with no mapping.
+
+```console
+PUT /publications
+```
+% TEST
+
+The following update mapping API request adds `title`, a new [`text`](https://www.elastic.co/guide/en/elasticsearch/reference/current/text.html) field, to the `publications` index.
+
+```console
+PUT /publications/_mapping
+{
+  "properties": {
+    "title": { "type": "text" }
+  }
+}
+```
+% TEST[continued]
+
+## Multiple targets
+
+The update mapping API can be applied to multiple data streams or indices in a single request. For example, you can update mappings for the `my-index-000001` and `my-index-000002` indices at the same time:
+
+```console
+# Create the two indices
+PUT /my-index-000001
+PUT /my-index-000002
+
+# Update both mappings
+PUT /my-index-000001,my-index-000002/_mapping
+{
+  "properties": {
+    "user": {
+      "properties": {
+        "name": {
+          "type": "keyword"
+        }
+      }
+    }
+  }
+}
+```
+% TEST[continued]
+
+## Add new properties to an existing object field
+
+You can use the update mapping API to add new properties to an existing [`object`](https://www.elastic.co/guide/en/elasticsearch/reference/current/object.html) field.
+
+First, create an index with the `name` object field and an inner `first` text field:
+
+```console
+PUT /my-index-000001
+{
+  "mappings": {
+    "properties": {
+      "name": {
+        "properties": {
+          "first": {
+            "type": "text"
+          }
+        }
+      }
+    }
+  }
+}
+```
+% TEST
+
+Then, use the update mapping API to add a new inner `last` text field to the `name` field:
+
+```console
+PUT /my-index-000001/_mapping
+{
+  "properties": {
+    "name": {
+      "properties": {
+        "last": {
+          "type": "text"
+        }
+      }
+    }
+  }
+}
+```
+% TEST[continued]
+
+## Add multi-fields to an existing field
+
+[Multi-fields](https://www.elastic.co/guide/en/elasticsearch/reference/current/multi-fields.html) let you index the same field in different ways. You can use the update mapping API to update the `fields` mapping parameter and enable multi-fields for an existing field.
+
+::::{warning}
+If an index (or data stream) contains documents when you add a multi-field, those documents will not have values for the new multi-field. You can populate the new multi-field with the [update by query API](https://www.elastic.co/guide/en/elasticsearch/reference/current/docs-update-by-query.html).
+::::
+
+To see how this works, try the following example.
+
+Use the [create index API](https://www.elastic.co/docs/api/doc/elasticsearch/operation/operation-indices-create) to create an index with the `city` [`text`](https://www.elastic.co/guide/en/elasticsearch/reference/current/text.html) field:
+
+```console
+PUT /my-index-000001
+{
+  "mappings": {
+    "properties": {
+      "city": {
+        "type": "text"
+      }
+    }
+  }
+}
+```
+% TEST
+
+Enable a multi-field for `city`:
+
+```console
+PUT /my-index-000001/_mapping
+{
+  "properties": {
+    "city": {
+      "type": "text",
+      "fields": {
+        "raw": {
+          "type": "keyword"
+        }
+      }
+    }
+  }
+}
+```
+% TEST[continued]
+
+## Change supported mapping parameters for an existing field
+
+Not all mapping parameters are updateable, but some like [`ignore_above`](https://www.elastic.co/guide/en/elasticsearch/reference/current/ignore-above.html) can be changed.
+
+Create an index with `ignore_above: 20`:
+
+```console
+PUT /my-index-000001
+{
+  "mappings": {
+    "properties": {
+      "user_id": {
+        "type": "keyword",
+        "ignore_above": 20
+      }
+    }
+  }
+}
+```
+% TEST
+
+Update `ignore_above` to `100`:
+
+```console
+PUT /my-index-000001/_mapping
+{
+  "properties": {
+    "user_id": {
+      "type": "keyword",
+      "ignore_above": 100
+    }
+  }
+}
+```
+% TEST[continued]
+
+## Change the mapping of an existing field
+
+You **cannot** change the field type of an existing field. Instead, create a new index with the desired mapping and [reindex](https://www.elastic.co/guide/en/elasticsearch/reference/current/docs-reindex.html) your data.
+
+Create an index with a `user_id` field of type `long`:
+
+```console
+PUT /my-index-000001
+{
+  "mappings": {
+    "properties": {
+      "user_id": {
+        "type": "long"
+      }
+    }
+  }
+}
+```
+% TEST
+
+Index some documents:
+
+```json
+POST /my-index-000001/_doc?refresh=wait_for
+{
+  "user_id": 12345
+}
+
+POST /my-index-000001/_doc?refresh=wait_for
+{
+  "user_id": 12346
+}
+```
+% TEST[continued]
+
+Create a new index with the `user_id` field as `keyword`:
+
+```console
+PUT /my-new-index-000001
+{
+  "mappings": {
+    "properties": {
+      "user_id": {
+        "type": "keyword"
+      }
+    }
+  }
+}
+```
+% TEST[continued]
+
+Reindex the data:
+
+```console
+POST /_reindex
+{
+  "source": {
+    "index": "my-index-000001"
+  },
+  "dest": {
+    "index": "my-new-index-000001"
+  }
+}
+```
+% TEST[continued]
+
+## Rename a field
+
+You **cannot** rename a field directly. Instead, use a [`field alias`](https://www.elastic.co/guide/en/elasticsearch/reference/current/alias.html).
+
+Create an index with the `user_identifier` field:
+
+```console
+PUT /my-index-000001
+{
+  "mappings": {
+    "properties": {
+      "user_identifier": {
+        "type": "keyword"
+      }
+    }
+  }
+}
+```
+% TEST[continued]
+
+Add the `user_id` alias:
+
+```console
+PUT /my-index-000001/_mapping
+{
+  "properties": {
+    "user_id": {
+      "type": "alias",
+      "path": "user_identifier"
+    }
+  }
+}
+```
+% TEST[continued]
\ No newline at end of file
diff --git a/manage-data/toc.yml b/manage-data/toc.yml
index 9275294ab4..9435039836 100644
--- a/manage-data/toc.yml
+++ b/manage-data/toc.yml
@@ -36,6 +36,7 @@ toc:
               - file: data-store/mapping/index-runtime-field.md
               - file: data-store/mapping/explore-data-with-runtime-fields.md
           - file: data-store/mapping/removal-of-mapping-types.md
+          - file: data-store/mapping/update-mappings-examples.md
       - file: data-store/text-analysis.md
         children:
           - file: data-store/text-analysis/concepts.md