---
title: User
summary: API reference for User.
status: draft
owner: SAIF Doc Gen
last_reviewed: 2026-09-24
library: SAIF.SAIFCode.Core
reference_type: package
---

# User

`User` is a data-carrier contract (DTO) in the SystemUsers area of SAIF.SAIFCode.Core, exposing the properties SAIF.Services and its consumers read and populate for this entity*.

## Purpose
- Carries data for the SystemUsers area, consumed by SAIF.Services and other layers that reference this library's contracts*.

## Context
- Namespace: `SAIF.Core.Contracts.SystemUsers`
- Kind: Class
- Assembly/package: `SAIF.Core` (NuGet package `SAIF.SAIFCode.Core`)

## Public members
| Member | Signature | Purpose |
| --- | --- | --- |
| `UniqueId` | `long UniqueId { get; set; }` | References the identifier of the associated unique record*. |
| `FirstName` | `string FirstName { get; set; }` | Holds the first name recorded on this User*. |
| `LastName` | `string LastName { get; set; }` | Holds the last name recorded on this User*. |
| `MiddleName` | `string MiddleName { get; set; }` | Holds the middle name recorded on this User*. |
| `Username` | `string Username { get; set; }` | Represents the username associated with this User*. |
| `Active` | `bool Active { get; set; }` | Represents the active associated with this User*. |
| `UserType` | `string UserType { get; set; }` | Classifies the user type applicable to this User*. |
| `UseOrganizationAddress` | `bool UseOrganizationAddress { get; set; }` | Represents the use organization address associated with this User*. |
| `PrimaryPhoneType` | `string PrimaryPhoneType { get; set; }` | Classifies the primary phone type applicable to this User*. |
| `PhoneNumber` | `string PhoneNumber { get; set; }` | Uniquely identifies the phone recorded on this User*. |
| `PhoneExtension` | `string PhoneExtension { get; set; }` | Represents the phone extension associated with this User*. |
| `FaxNumber` | `string FaxNumber { get; set; }` | Uniquely identifies the fax recorded on this User*. |
| `EmailAddress` | `string EmailAddress { get; set; }` | Represents the email address associated with this User*. |
| `JobTitle` | `string JobTitle { get; set; }` | Represents the job title associated with this User*. |
| `Department` | `string Department { get; set; }` | Represents the department associated with this User*. |
| `BillingCenter` | `bool BillingCenter { get; set; }` | Represents the billing center associated with this User*. |
| `PolicyCenter` | `bool PolicyCenter { get; set; }` | Represents the policy center associated with this User*. |
| `ContactManager` | `bool ContactManager { set; }` | Represents the contact manager associated with this User*. |

> **Note:** Statements marked with `*` were inferred from code structure, naming
> conventions, or contextual evidence where direct confirmation was not available
> in source artifacts. Statements marked with `**` could not be confirmed; treat
> as unknown until verified.

## Sources
- Core/SAIF.Core/Contracts/SystemUsers/User.cs