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# updateObjectType

Update a custom object type.

Updates an existing custom object type definition (name, description, logo, icon). **What can be updated:**

* `name` — display name (must remain unique among active types)
* `description` — type description
* `logo_url` — logo URL
* `icon` — display icon (emoji or icon glyph, e.g.

## Parameters

| Name                | Type    | Required | Description                                                       |
| ------------------- | ------- | -------- | ----------------------------------------------------------------- |
| `objectTypeId`      | integer | Yes      | The object type ID (from listObjectTypes)                         |
| `name`              | string  | No       |                                                                   |
| `description`       | string  | No       |                                                                   |
| `logo_url`          | string  | No       |                                                                   |
| `icon`              | object  | No       |                                                                   |
| `display_id_prefix` | string  | No       | Display ID prefix for instances (e.g., "VEN" for Vendor → VEN-1). |