[[reference-migration-deprecations]]

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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.migration.deprecations

Retrieves information about different cluster, node, and index level settings that use deprecated features that will be removed or changed in the next major version.

{ref}/migration-api-deprecation.html[{es} documentation]

[discrete]
==== Function signature

[source,ts]
----
(MigrationDeprecationsRequest, options?): Promise<MigrationDeprecationsResponse>
----

[discrete]
===== `MigrationDeprecationsRequest`

[source,ts]
----
interface MigrationDeprecationsRequest extends <<shared-type-request-base, RequestBase>> {
  index?: <<shared-type-index-name, IndexName>>
}
----

[discrete]
===== `MigrationDeprecationsResponse`

[source,ts]
----
interface MigrationDeprecationsResponse {
  cluster_settings: MigrationDeprecationsDeprecation[]
  index_settings: Record<string, MigrationDeprecationsDeprecation[]>
  node_settings: MigrationDeprecationsDeprecation[]
  ml_settings: MigrationDeprecationsDeprecation[]
}
----