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title: >- 
  Reference: Workday Object Resource Names and Object Keys
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---

## <a id="section_resourceObjectNames"></a>REST API Resource Names and Object Keys for Workday Objects

Use these resource names and object keys with the Custom Object REST APIs.

This table lists the:

-   Workday objects that you can extend with custom objects.
-   Resource name (plural form) of the Workday object. Use the appropriate resource name in the request URL of the GET endpoint that retrieves a collection of multi-instance custom objects.
-   Object key (singular form) of the Workday object. Use the object key in the request body of the POST endpoint that creates a custom object. The object key identifies the associated business object.


<table><thead><tr><th>Extended Workday Object</th><th>Resource Name in the Request URL</th><th>Object Key in the Request Body</th></tr></thead><tbody><tr><td>Academic Affiliate</td><td>academicAffiliates</td><td>academicAffiliate</td></tr><tr><td>Academic Unit</td><td>academicUnits</td><td>academicUnit</td></tr><tr><td>Academic Unit Hierarchy</td><td>academicUnitHierarchies</td><td>academicUnitHierarchy</td></tr><tr><td>Allocation Pools</td><td>allocationPools</td><td>allocationPool</td></tr><tr><td>Applicant (Pre-Hire)</td><td>applicants</td><td>applicant</td></tr><tr><td>Bank Account</td><td>bankAccounts</td><td>bankAccount</td></tr><tr><td>Business Asset</td><td>businessAssets</td><td>businessAsset</td></tr><tr><td>Company</td><td>companies</td><td>company</td></tr><tr><td>Cost Center</td><td>costCenters</td><td>costCenter</td></tr><tr><td>Customer</td><td>customers</td><td>customer</td></tr><tr><td>Custom Object</td><td>customObjectDefinitions</td><td>customObjectDefinition</td></tr><tr><td>Customer Contract</td><td>customerContracts</td><td>customerContract</td></tr><tr><td>Customer Contract Line</td><td>customerContractLines</td><td>customerContractLine</td></tr><tr><td>Customer Invoice</td><td>customerInvoices</td><td>customerInvoice</td></tr><tr><td>Customer Invoice Adjustment</td><td>customerInvoiceAdjustments</td><td>customerInvoiceAdjustment</td></tr><tr><td>Donor</td><td>(not supported)</td><td></td></tr><tr><td>Employee Contracts</td><td>employeeContracts</td><td>employeeContract</td></tr><tr><td>Former Worker</td><td>formerWorkers</td><td>formerWorker</td></tr><tr><td>Gift</td><td>(not supported)</td><td></td></tr><tr><td>Job Profile</td><td>jobProfiles</td><td>jobProfile</td></tr><tr><td>Job Requisition</td><td>(not supported)</td><td></td></tr><tr><td>Ledger Account</td><td>ledgerAccounts</td><td>ledgerAccount</td></tr><tr><td>Loan</td><td>loans</td><td>loan</td></tr><tr><td>Location</td><td>locations</td><td>location</td></tr><tr><td>Opportunity</td><td>opportunities</td><td>opportunity</td></tr><tr><td>Position Restrictions</td><td>positionRestrictions</td><td>positionRestriction</td></tr><tr><td>Project</td><td>projects</td><td>project</td></tr><tr><td>Purchase Order</td><td>purchaseOrders</td><td>purchaseOrder</td></tr><tr><td>Purchase Order Lines</td><td>purchaseOrderLines</td><td>purchaseOrderLine</td></tr><tr><td>Quote</td><td>quotes</td><td>quote</td></tr><tr><td>Region</td><td>regions</td><td>region</td></tr><tr><td>Requisition</td><td>requisition</td><td>requisition</td></tr><tr><td>Requisition Line</td><td>requisitionLine</td><td>requisitionLine</td></tr><tr><td>Student</td><td>students</td><td>student</td></tr><tr><td>Student Application</td><td>studentApplications</td><td>studentApplication</td></tr><tr><td>Student Financials Period Record</td><td>studentFinancialsPeriodRecord</td><td>studentFinancialsPeriodRecord</td></tr><tr><td>Student Recruitment</td><td>studentProspectRecruitments</td><td>studentProspectRecruitment</td></tr><tr><td>Supervisory Organization</td><td>supervisoryOrganizations</td><td>supervisoryOrganization</td></tr><tr><td>Supplier</td><td>suppliers</td><td>supplier</td></tr><tr><td>Supplier Contract</td><td>supplierContracts</td><td>supplierContract</td></tr><tr><td>Supplier Invoice</td><td>supplierInvoices</td><td>supplierInvoice</td></tr><tr><td>Supplier Invoice Adjustment</td><td>supplierInvoiceAdjustments</td><td>supplierInvoiceAdjustment</td></tr><tr><td>Supplier Invoice Lines</td><td>supplierInvoiceLines</td><td>supplierInvoiceLine</td></tr><tr><td>Worker</td><td>workers</td><td>worker</td></tr><tr><td>Worker Custom Data Snapshot</td><td>workerCustomDataSnapshot</td><td>workerCustomDataSnapshot</td></tr><tr><td>Worktag, custom 01</td><td>customWorktag01</td><td>customWorktag01</td></tr><tr><td>Worktag, custom 02</td><td>customWorktag02</td><td>customWorktag02</td></tr><tr><td>Worktag, custom 03</td><td>customWorktag03</td><td>customWorktag03</td></tr><tr><td>Worktag, custom 04</td><td>customWorktag04</td><td>customWorktag04</td></tr><tr><td>Worktag, custom 05</td><td>customWorktag05</td><td>customWorktag05</td></tr><tr><td>Worktag, custom 06</td><td>customWorktag06</td><td>customWorktag06</td></tr><tr><td>Worktag, custom 07</td><td>customWorktag07</td><td>customWorktag07</td></tr><tr><td>Worktag, custom 08</td><td>customWorktag08</td><td>customWorktag08</td></tr><tr><td>Worktag, custom 09</td><td>customWorktag09</td><td>customWorktag09</td></tr><tr><td>Worktag, custom 10</td><td>customWorktag10</td><td>customWorktag10</td></tr><tr><td>Worktag, custom 11</td><td>customWorktag11</td><td>customWorktag11</td></tr><tr><td>Worktag, custom 12</td><td>customWorktag12</td><td>customWorktag12</td></tr><tr><td>Worktag, custom 13</td><td>customWorktag13</td><td>customWorktag13</td></tr><tr><td>Worktag, custom 14</td><td>customWorktag14</td><td>customWorktag14</td></tr><tr><td>Worktag, custom 15</td><td>customWorktag15</td><td>customWorktag15</td></tr></tbody></table><br/>

### Related Information

[Custom Object (Multi-Instance) REST APIs](/wcp_docs/izr1621310982493.html)

[Custom Object (Single-Instance) REST APIs](/wcp_docs/vjs1621308998420.html)