[[reference-indices-put_alias]]

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||        ██╔══██╗██╔══╝  ██╔══██║██║  ██║██║╚██╔╝██║██╔══╝                                                              ||
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||    This file is autogenerated, DO NOT send pull requests that changes this file directly.                             ||
||    You should update the script that does the generation, which can be found in:                                      ||
||    https://github.com/elastic/elastic-client-generator-js                                                             ||
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||    You can run the script with the following command:                                                                 ||
||       npm run elasticsearch -- --version <version>                                                                    ||
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////////

[discrete]
=== client.indices.putAlias

Create or update an alias. Adds a data stream or index to an alias.

{ref}/indices-aliases.html[{es} documentation]

[discrete]
==== Function signature

[source,ts]
----
(IndicesPutAliasRequest, options?): Promise<IndicesPutAliasResponse>
----

[discrete]
===== `IndicesPutAliasRequest`

[source,ts]
----
interface IndicesPutAliasRequest extends <<shared-type-request-base, RequestBase>> {
  index: <<shared-type-indices, Indices>>
  name: <<shared-type-name, Name>>
  master_timeout?: <<shared-type-duration, Duration>>
  timeout?: <<shared-type-duration, Duration>>
  filter?: QueryDslQueryContainer
  index_routing?: <<shared-type-routing, Routing>>
  is_write_index?: boolean
  routing?: <<shared-type-routing, Routing>>
  search_routing?: <<shared-type-routing, Routing>>
}
----

[discrete]
===== `IndicesPutAliasResponse`

[source,ts]
----
type IndicesPutAliasResponse = <<shared-type-acknowledged-response-base, AcknowledgedResponseBase>>
----