# Create Project Settings

Creates initial settings for the project. Useful for enabling features like Unified Contact ID. For new projects with no existing contacts, you can enable Unified Contact ID immediately.

Endpoint: POST /v1/projects/{project_id}/settings
Version: 1.0
Security: Basic, oAuth2

## Path parameters:

  - `project_id` (string, required)
    The unique ID of the project. You can find this on the Sinch Dashboard.

## Request fields (application/json):

  - `contact_settings` (object)
    Settings related to contact management for the project.

  - `contact_settings.unified_contact_id_enabled` (boolean)
    Enables the Unified Contact ID feature. When enabled, contacts with the same phone number across SMS, RCS, and MMS channels are treated as a single entity. [See the documentation](https://developers.sinch.com/docs/conversation/unified-contact-id/) for details and requirements.
    Example: true

## Response 200 fields (application/json):

  - `project_id` (string)
    The unique ID of the project.
    Example: "56bbb185-c7ea-48fb-ad97-638a0dc5eed7"

  - `settings` (object)
    The settings object containing contact settings.

  - `settings.contact_settings` (object)
    Settings related to contact management for the project.

  - `settings.contact_settings.unified_contact_id_enabled` (boolean)
    Enables the Unified Contact ID feature. When enabled, contacts with the same phone number across SMS, RCS, and MMS channels are treated as a single entity. [See the documentation](https://developers.sinch.com/docs/conversation/unified-contact-id/) for details and requirements.
    Example: true

## Response 400 fields (application/json):

  - `error` (object)

  - `error.code` (integer)

  - `error.details` (array)

  - `error.details.type_url` (string)

  - `error.details.value` (string)

  - `error.message` (string)

  - `error.status` (string)

## Response 403 fields (application/json):

  - `error` (object)

  - `error.code` (integer)

  - `error.details` (array)

  - `error.details.type_url` (string)

  - `error.details.value` (string)

  - `error.message` (string)

  - `error.status` (string)

## Response 500 fields (application/json):

  - `error` (object)

  - `error.code` (integer)

  - `error.details` (array)

  - `error.details.type_url` (string)

  - `error.details.value` (string)

  - `error.message` (string)

  - `error.status` (string)

## Response 501 fields (application/json):

  - `error` (object)

  - `error.code` (integer)

  - `error.details` (array)

  - `error.details.type_url` (string)

  - `error.details.value` (string)

  - `error.message` (string)

  - `error.status` (string)