---
schema: rendered-html/v1
title: "Custom Field Defaults | Developer Portal for YouTrack and Hub Documentation"
source_url: https://www.jetbrains.com/help/youtrack/devportal/resource-api-admin-customFieldSettings-customFields-fieldID-fieldDefaults.html
generated_at: 2026-06-11T15:09:28.656719+00:00
---

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4. [Custom Fields](jetbrains__com__help__youtrack__devportal__resource-api-admin-customfieldsettings-customfields.md)
5. [Sub-resources](#0)
6. [Custom Field Defaults](#0)

# Custom Field Defaults﻿

Last modified: 19 March 2025

This resource lets you read and update default settings of a custom field in a project.

| Resource | ``` /api/admin/customFieldSettings/customFields/{fieldID}/fieldDefaults ``` |
| --- | --- |
| Returned entity | CustomFieldDefaults. For the description of the entity attributes, see [Supported Fields](/help/youtrack/devportal/resource-api-admin-customFieldSettings-customFields-fieldID-fieldDefaults.html#CustomFieldDefaults-supported-fields) section. |

## CustomFieldDefaults attributes﻿

Represents default project-related settings of the custom field. These settings are applied at the moment when the custom field is attached to a project. After that, any changes in default settings do not affect the field settings for this project.

### Related Resources﻿

Below you can find the list of resources that let you work with this entity.

- Custom Field Defaults

### Attributes﻿

This table describes attributes of the `CustomFieldDefaults` entity.

- To receive an attribute in the response from the server, specify it explicitly in the `fields` request parameter.
- To update an attribute, provide it in the body of a POST request.

| Field | Type | Description |
| id | String | The ID of the default custom field settings. `Read-only`. |
| canBeEmpty | Boolean | Indicates whether this field can have empty value in the issue. |
| emptyFieldText | String | The text that is shown as a placeholder when the field is empty. `Can be null`. |
| isPublic | Boolean | If `true`, then a user needs Read Issue and Update Issue permissions to access this field. Otherwise, the field is considered private, and Read Issue Private Fields and Update Issue Private Fields permissions are required. |
| parent | CustomField | Reference to the custom field. `Read-only`. |

- [Custom Field Defaults](/help/youtrack/devportal/resource-api-admin-customFieldSettings-customFields-fieldID-fieldDefaults.html)
- [CustomFieldDefaults attributes](/help/youtrack/devportal/resource-api-admin-customFieldSettings-customFields-fieldID-fieldDefaults.html#CustomFieldDefaults-supported-fields)

Operations with Specific CustomFieldOperations with Specific CustomFieldDefaults

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