---
category: [Administration & Integrations, Platform and Product Extensions, Platform and Product Extensions/Integration, Administration & Integrations/Custom Integrations & Apps, Platform and Product Extensions/Workday Extend]
keyword: [Extend, Presentation Components, Endpoint authentication, UI components]
nav: wcp_docs
parent_url: /wcp_docs/
title: >- 
  Reference: Integration System User (ISU)
layout: subsection
---

## <a id="section_wcpIsu"></a>Integration System User (ISU)

Use the simplified `ISU` authentication scheme to enable your app to use a preconfigured authorized Integration System User (ISU) on your tenant. Presentation Components authenticate a PMD endpoint request with an API client that you generate when you set up the ISU in App Manager.

## <a id="section_orw_ldw_sfb"></a>SMD authType Attributes

<table><thead><tr><th>Attribute</th><th>Value</th></tr></thead><tbody><tr><td>id</td><td>The ID of this <code>authType</code> entry. PMD endpoints use this ID to reference which <code>authType</code> to use for endpoint authentication. <p>If you're using multiple ISU users, assign a unique <code>id</code> for each ISU user. The ISU auth <code>id</code> must be unique across custom apps.</p></td></tr><tr><td>scheme</td><td><code>ISU</code> (case-sensitive)</td></tr><tr><td>username</td><td>The name of the ISU account that you've configured in App Manager. See <a href="/wcp_docs/GUID-72d57df4-c4ec-4825-a6e8-fdd596cf930e.html">Assign Integration System Users to an App</a>.</td></tr></tbody></table><br/>

## <a id="section_rrj_ndw_sfb"></a>Example

```
"siteAuth": {
"authTypes": [
 {
   "id" : "isuAuth",
   "scheme": "ISU",
   "username": "Default_ISU"
 }
]
}
 
```

### Related Information

[Concept: ISU Authentication](/wcp_docs/GUID-cb3e0fcd-bb97-4005-8d10-3a02e88dab71-enHYPHENus.html)

[Steps: Set Up ISU Authentication for Apps](/wcp_docs/GUID-3277fec3-24c9-41da-9840-c61b41033f28-enHYPHENus.html)

[Declare Authentication Types in the SMD](/wcp_docs/nyw1530545468565.html)

[Define Endpoint Authentication in the PMD](/wcp_docs/yea1530546235609.html)