---
category: [Administration & Integrations, Administration & Integrations/Custom Integrations & Apps, Platform and Product Extensions, Platform and Product Extensions/Workday Extend, Platform and Product Extensions/Integration]
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: Workday-Delivered vs. Workday Extend Business Objects
layout: subsection
---

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<table><thead><tr><th>Type</th><th>Workday-Delivered</th><th>Workday Extend</th></tr></thead><tbody><tr><td>Instance Type</td><td>Single-Instance, Multi-Instance</td><td>Same</td></tr><tr><td>Field Types</td><td>Boolean, Currency, Date, Decimal, Instance/Reference, Rich Text, Text, Attachments</td><td>Same</td></tr><tr><td>Field-Level Security Domains</td><td>Yes</td><td>Yes</td></tr><tr><td>Report Data Sources</td><td>Yes</td><td>Yes</td></tr><tr><td>Available in Condition/Validation Rules</td><td>Yes</td><td>Yes</td></tr><tr><td>Audit Trail</td><td>Yes</td><td>Yes</td></tr><tr><td>Effective-Dated</td><td>Some</td><td>No</td></tr><tr><td>APIs</td><td>REST, SOAP</td><td>REST</td></tr><tr><td>Translatable</td><td>Yes</td><td>No</td></tr><tr><td>Purging</td><td>Yes</td><td>Yes</td></tr><tr><td>Masking</td><td>Yes</td><td>No</td></tr></tbody></table><br/>