# UserDetails


Specifies the user name, server ID, and session ID for a workflow.

## Contents


 ** ServerId **   <a name="TransferFamily-Type-UserDetails-ServerId"></a>
The system-assigned unique identifier for a Transfer server instance.   
Type: String  
Length Constraints: Fixed length of 19.  
Pattern: `s-([0-9a-f]{17})`   
Required: Yes

 ** UserName **   <a name="TransferFamily-Type-UserDetails-UserName"></a>
A unique string that identifies a Transfer Family user associated with a server.  
Type: String  
Length Constraints: Minimum length of 3. Maximum length of 100.  
Pattern: `[\w][\w@.-]{2,99}`   
Required: Yes

 ** SessionId **   <a name="TransferFamily-Type-UserDetails-SessionId"></a>
The system-assigned unique identifier for a session that corresponds to the workflow.  
Type: String  
Length Constraints: Minimum length of 3. Maximum length of 32.  
Pattern: `[\w-]*`   
Required: No

## See Also


For more information about using this API in one of the language-specific Amazon SDKs, see the following:
+  [Amazon SDK for C\$1\$1](https://docs.amazonaws.cn/goto/SdkForCpp/transfer-2018-11-05/UserDetails) 
+  [Amazon SDK for Java V2](https://docs.amazonaws.cn/goto/SdkForJavaV2/transfer-2018-11-05/UserDetails) 
+  [Amazon SDK for Ruby V3](https://docs.amazonaws.cn/goto/SdkForRubyV3/transfer-2018-11-05/UserDetails)