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| :-- | :-- | :-- | :-- |
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#### URL Expired

The URL for this request expired after 30 days.

**fieldId**  
*string*  
required  
`[^\/#!?]+?`

**PublicUpdateContactCustomFieldDto**  
*type*  
*string*  
*enum*  
Field type that determines business logic behavior. Allowed values: input, dropdown, multiselect, checkbox.

`input``dropdown``multiselect``checkbox`

**label**  
*string*  
Display name of the field shown in the UI.

**category**  
*string*  
Category used for visual grouping of fields in the UI.

**default**  
*string | number | boolean | array | object*  
Default value for the field. Varies by field type. Examples: empty string ("") for "input", empty array ([]) for "multiselect", false for "checkbox".

**options**  
*array*  
Additional configuration for field types that support predefined values, such as "multiselect", "dropdown". Defines the list of selectable options for these field types.

**invisibleField**  
*boolean*  
Whether the field should be hidden in the UI.

*true*/*false*

**invisibleLabel**  
*boolean*  
Whether the field label should be hidden in the UI.

*true*/*false*

**leftMenu**  
*boolean*  
Whether the field should appear in the left menu navigation.

*true*/*false*

**mandatory**  
*boolean*  
Whether the field is required to be populated.

*true*/*false*

**formula**  
*string*  
Formula expression for fields of type "formula". Ignored for other field types.

**extraConfig**  
*object*  
Extra configuration for field formatting and display. Applicable to field types that support value formatting, such as "formula", "number", and others. Controls how the field value is rendered (e.g. number of decimal points, suffix, date format).

**externalServiceFieldPath**  
*string*  
Field path used to map data from an external service response. Supports dot notation for nested properties (e.g. "employees.current_count"). Must be used together with externalServiceType.

**externalServiceType**  
*string*  
*enum*  
External service used for automatic field enrichment. The target entity must have the corresponding external service integration enabled, otherwise the field will not be enriched. Must be used together with externalServiceFieldPath. Allowed values: APOLLO, PITCHBOOK, GAIN_PRO, NONE, SELF, CARTA, CARTA_DWH.

**readonly**  
*boolean*  
Whether the field is read-only and cannot be edited by users.

*true*/*false*

**condition**  
*string*  
Conditional expression that controls field visibility. When set, the field is only shown if the condition evaluates to true.

# Response Codes  
* `200`  Custom field updated successfully  
* `400`  Invalid request parameters  
* `401`  Invalid or missing API key  
* `500`  Internal server error

Updated 3 months ago

---

**Shell Examples**  
```
xxxxxxxxxx

curl --request PATCH \
     --url https://crm-public-api.app.carta.com/v1/contacts/custom-fields/fieldId \
     --header 'accept: application/json' \
     --header 'content-type: application/json'
```

Click `Try It!` to start a request and see the response here! Or choose an example:

* `application/json`  
* `200`
* `400`
* `401`
* `500`

Updated 3 months ago