# Start a trial

**POST /_license/start_trial**

Start a 30-day trial, which gives access to all subscription features.

NOTE: You are allowed to start a trial only if your cluster has not already activated a trial for the current major product version.
For example, if you have already activated a trial for v8.0, you cannot start a new trial until v9.0. You can, however, request an extended trial at https://www.elastic.co/trialextension.

To check the status of your trial, use the get trial status API.

## Required authorization

* Cluster privileges: `manage`



## Servers
- http://api.example.com: http://api.example.com ()


## Authentication methods
- Api key auth
- Basic auth
- Bearer auth


## Parameters


### Query parameters
- **acknowledge** (boolean)
  To start a trial, you must accept the acknowledge messages and set this parameter to `true`.
- **type** (string)
  The type of trial license to generate
- **master_timeout** (string)
  Period to wait for a connection to the master node.


## Responses
### 200


#### Body: application/json (object)
- **acknowledged** (boolean)

- **error_message** (string)

- **trial_was_started** (boolean)

- **type** (string)



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