---
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, Model Components, Extend Business Objects, MCBO, Model Component Business Objects, Business Objects, Model BO]
nav: wcp_docs
parent_url: /wcp_docs/
title: >- 
  Reference: Targets for Referencing Workday Business Objects
layout: subsection
---

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The `target` attribute on `SINGLE_INSTANCE` field types of Extend business objects is a reference to:

-   Extend business objects concurrently defined in your app.
-   Workday-delivered business objects.


<b>Note:</b> You can also create tasks in the context of Workday-delivered business objects that support the `target` attribute.

To determine if a Workday-delivered business object supports the `target` attribute, you can access the <b>View Business Objects Available to Extend</b> report in Workday. For each supported Workday-delivered business object, this report:

-   Displays the `target` attribute name.
-   Indicates if the business object supports contextual security.
-   Indicates if the business object is valid for custom tasks.


### Related Information

[Concept: Restrictions on Target Workday Business Objects](/wcp_docs/jzl1663170194544.html)

[Tutorial: Generate Components from Business Objects](https://wd5.myworkday.com/workday/learning/course/5fe6ace23e7e10016bb2cf3d24f80001?type=9882927d138b100019b928e75843018d)

[Developer Forum: Additional Target Reference Business Objects Available](https://forum.developer.workday.com/t/additional-target-reference-business-objects-available/3604)