# Creating Retrieve Targets :::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. ::: The build.xml file specifies a series of commands to be executed by Ant. Within the build.xml file are named targets that process a series of commands when you run Ant with a target name. The following parameters can be set for each `` target: | Field | Description | | ---------------- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | | `username` | Required if `sessionId` isn’t specified. The Salesforce username used 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 organization associated with this project. If you are using a security token, paste the 25-digit token value to the end of your password. | | `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 value to `test.salesforce.com`. | | `retrieveTarget` | Required. The root of the directory structure into which the metadata files are retrieved. | | `packageNames` | Required if `unpackaged` is not specified. A comma-separated list of the names of the packages to retrieve. Specify either `packageNames` or `unpackaged`, but not both. | | `apiVersion` | Optional. The Metadata API version to use for the retrieved metadata files. The default is 68.0. | | `pollWaitMillis` | Optional. Defaults to `10000`. The number of milliseconds to wait between attempts when polling for results of the retrieve request. The client continues to poll the server up to the limit defined by `maxPoll`. | | `maxPoll` | Optional. Defaults to `200`. The number of times to poll the server for the results of the retrieve request. The wait time between successive poll attempts is defined by `pollWaitMillis`. | | `singlePackage` | Optional. Defaults to `true`. Set this parameter to `false` if you are retrieving multiple packages. If set to `false`, the retrieved zip file includes an extra top-level directory containing a subdirectory for each package. | | `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. | | `unpackaged` | Required if `packageNames` is not specified. The path and name of a file manifest that specifies the components to retrieve. Specify either `unpackaged` or `packageNames`, but not both. | | `unzip` | Optional. Defaults to `true`. If set to `true`, the retrieved components are unzipped. If set to `false`, the retrieved components are saved as a zip file in the `retrieveTarget` directory. | - **[Retrieving Unpackaged Components](/docs/platform/salesforce-migration-guide/guide/forcemigrationtool-retrieve-unpackaged.md)** - **[Retrieving Managed or Unmanaged Packages](/docs/platform/salesforce-migration-guide/guide/forcemigrationtool-retrieve-packaged.md)** - **[Retrieving Components in Bulk](/docs/platform/salesforce-migration-guide/guide/forcemigrationtool-retrieve-bulk.md)**