---
title: "Create project custom field value"
method: POST
path: "/projects/{project_id}/custom_field_values"
tags: ["custom_field_values_per_project"]
---

# Create project custom field value

`POST /projects/{project_id}/custom_field_values`

Creates a project custom field value.

## Request body

- object
  - `custom_field_id` integer, required — The unique identifier of the custom field.
  - `value` string, required — The actual value of the custom fields. For a custom field that has a `data_type` of `multiple_choice_selection_list`, this can be an array of values from that list.

## Response `200`

The new project custom field value.

- CustomFieldValue
  - `id` integer — Unique identifier for the custom field value.
  - `custom_field_name` string
  - `custom_field_id` integer
  - `value` string — The actual value of the custom fields. For a custom field that has a `data_type` of `multiple_choice_selection_list`, this can be an array of values from that list.
  - `created_at` string, date-time
  - `updated_at` string, date-time

## Other responses

- `default` — Generic error payload

---

[API](https://skmtc.net/smartsheet/apis/resource-management-openapi-reference.md) · [All operations](https://skmtc.net/smartsheet/apis/resource-management-openapi-reference/llms.txt) · [OpenAPI document](https://skmtc-service-staging.skmtc.workers.dev/v1/apis/smartsheet/resource-management-openapi-reference/versions/e4c439ac13f2/schema)