# Deploying a Recent Validation

Deploying a validation helps you shorten your deployment time because tests aren’t rerun. If you have a recent successful validation, you can deploy the validated components without running tests. You can deploy a recent validation with the `<sf:deployRecentValidation>` task.

:::note
The Ant Migration Tool is retired with Spring ’24. The tool continues to function as-is for future API versions but isn’t updated with new functionality and isn’t supported.  If Salesforce adds a new feature that is incompatible with Ant, the Ant Migration Tool won't be updated to support it. To manage metadata changes, switch to Salesforce CLI for a modern, supported developer experience.
:::

A validation doesn’t save any components in the organization. You use a validation only to check the success or failure messages that you would receive with an actual deployment. To validate your components, add the `checkOnly="true"` parameter in your deploy target (`<sf:deploy>`).

Before deploying a recent validation, ensure that the following requirements are met.

- The components have been validated successfully for the target environment within the last 10 days.
- As part of the validation, Apex tests in the target org have passed.
- Code coverage requirements are met.

  - If all tests in the org or all local tests are run, overall code coverage is at least 75%, and Apex triggers have some coverage.
  - If specific tests are run with the `RunSpecifiedTests` test level, each class and trigger that was deployed is covered by at least 75% individually.

The `<sf:deployRecentValidation>` task supports these parameters.

| Field                | Description                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                             |
| -------------------- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
| `username`           | Required if `sessionId` isn’t specified. The Salesforce username for login. The username associated with this connection must have the Modify Metadata through Metadata API Functions permission.                                                                                                                                                                                                                                                                                                                                                       |
| `password`           | Required if `sessionId` isn’t specified. The password you use to log in to the org associated with this project. If you are using a security token, paste the 25-digit token value to the end of your password.                                                                                                                                                                                                                                                                                                                                         |
| `recentValidationId` | Required. Specifies the ID of a recent validation.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      |
| `sessionId`          | Required if `username` and `password` aren’t specified. The ID of an active Salesforce session or the OAuth access token. A session is created after a user logs in to Salesforce successfully with a username and password. Use a session ID for logging in to an existing session instead of creating a new session. Alternatively, use an access token for OAuth authentication. For more information, see [Authenticating Apps with OAuth](https://help.salesforce.com/apex/HTViewHelpDoc?id=remoteaccess_authenticate.htm) in the Salesforce Help. |
| `serverurl`          | Optional. The Salesforce server URL (if blank, defaults to `login.salesforce.com`). To connect to a sandbox instance, change this URL to `test.salesforce.com`.                                                                                                                                                                                                                                                                                                                                                                                         |
| `rollbackOnError`    | Optional. Defaults to `true`. Indicates whether any failure causes a complete rollback (`true`) or not (`false`). If `false`, whatever set of actions can be performed without errors are performed, and errors are returned for the remaining actions. This parameter must be set to `true` if you are deploying to a production org.                                                                                                                                                                                                                  |
| `maxPoll`            | Optional. Defaults to `200`. The number of times to poll the server for the results of the deploy request. Deployment can succeed even if you stop waiting.                                                                                                                                                                                                                                                                                                                                                                                             |
| `pollWaitMillis`     | Optional. Defaults to `10000`. The number of milliseconds to wait when polling for results of the deployment. Deployment can succeed even if you stop waiting.                                                                                                                                                                                                                                                                                                                                                                                          |
| `trace`              | Optional. Defaults to `false`. Prints the SOAP requests and responses to the console. This option shows the user’s password in plain text during login.                                                                                                                                                                                                                                                                                                                                                                                                 |

This example shows a target for deploying a recent validation. The value of `recentValidationId` (`sf.​recentValidationId`) is defined in the build.properties file.

```xml
<target name="quickDeploy">
  <sf:deployRecentValidation username="${sf.username}" password="${sf.password}" 
                             sessionId="${sf.sessionId}" serverurl="${sf.serverurl}"
                             maxPoll="${sf.maxPoll}"
                             recentValidationId="${sf.​recentValidationId}"/>
</target>
```

Support for `<sf:deployRecentValidation>` starts with version 34.0 of the Ant Migration Tool.