---
nav: wcp_docs
parent_url: /wcp_docs/
title: REST API Headers
layout: subsection
---

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<table><thead><tr><th>Header</th><th>Example</th><th>Related Documentation</th></tr></thead><tbody><tr><td>Image Resize (for Extend Apps only)</td><td>x-wd-image-max-dimension</td><td><a href="/wcp_docs/spm1647304940201.html">Concept: Image Resize REST API Header</a></td></tr><tr><td>External Integration Headers</td><td><p>wd-external-request-id</p> <p>wd-external-application-id</p> <p>wd-external-originator-id</p></td><td><a href="/wcp_docs/GUID-4037a047-c6e5-4e83-bfce-54e07d30b76b-enHYPHENus.html">Concept: REST API External Integration Headers</a></td></tr><tr><td>Metadata Header</td><td>wd-metadata-api-version: v1</td><td><a href="/wcp_docs/pyd1580334491723.html">Concept: REST Metadata API Header</a></td></tr><tr><td>Request Timeout Header</td><td>wd-request-timeout</td><td><a href="/wcp_docs/GUID-9b09a436-5426-40da-983d-095db833566f-enHYPHENus.html">Concept: Request Timeout REST API Header</a></td></tr><tr><td>Validate Only Header</td><td>x-validate-only: 1</td><td><a href="/wcp_docs/rni1611281077170.html">Concept: Validate Only Mode for REST APIs</a></td></tr><tr><td>Warning Action Header</td><td>wd-warning-action: updateonwarning</td><td><a href="/wcp_docs/GUID-83e641fd-e05f-47a7-b585-128bc7c96fe4-enHYPHENus.html">Concept: Warning Action REST API Header</a></td></tr></tbody></table><br/>