[role="xpack"]
[testenv="platinum"]
[[ml-delete-expired-data]]
=== Delete expired data API
++++
<titleabbrev>Delete expired data</titleabbrev>
++++

Deletes expired and unused machine learning data.

==== Request

`DELETE _ml/_delete_expired_data`

==== Description

Deletes all job results, model snapshots and forecast data that have exceeded
their `retention days` period. Machine learning state documents that are not
associated with any job are also deleted.

==== Authorization

You must have `manage_ml`, or `manage` cluster privileges to use this API.
For more information, see
{stack-ov}/security-privileges.html[Security Privileges] and
{stack-ov}/built-in-roles.html[Built-in Roles].


==== Examples

The endpoint takes no arguments:

[source,js]
--------------------------------------------------
DELETE _ml/_delete_expired_data
--------------------------------------------------
// CONSOLE
// TEST

When the expired data is deleted, you receive the following response:
[source,js]
----
{
  "deleted": true
}
----
// TESTRESPONSE