diff --git a/packages/fields/README.md b/packages/fields/README.md
index 27e55ddf720768..346c1fc512256e 100644
--- a/packages/fields/README.md
+++ b/packages/fields/README.md
@@ -68,7 +68,11 @@ Undocumented declaration.
 
 ### duplicateTemplatePart
 
-Undocumented declaration.
+This action is used to duplicate a template part.
+
+_Type_
+
+-   `Action< TemplatePart >`
 
 ### exportPattern
 
diff --git a/packages/fields/src/actions/duplicate-template-part.tsx b/packages/fields/src/actions/duplicate-template-part.tsx
index d48efa89119d8a..914ab0bf9cf99d 100644
--- a/packages/fields/src/actions/duplicate-template-part.tsx
+++ b/packages/fields/src/actions/duplicate-template-part.tsx
@@ -16,6 +16,9 @@ import type { TemplatePart } from '../types';
 import { CreateTemplatePartModalContents } from '../components/create-template-part-modal';
 import { getItemTitle } from './utils';
 
+/**
+ * This action is used to duplicate a template part.
+ */
 const duplicateTemplatePart: Action< TemplatePart > = {
 	id: 'duplicate-template-part',
 	label: _x( 'Duplicate', 'action label' ),