---
title: "/ContactCustomFields"
slug: "contactcustomfields-9"
updated: 2025-08-26T17:41:53Z
published: 2025-08-26T18:33:17Z
canonical: "guide.youraspire.com/contactcustomfields-9"
---

> ## Documentation Index
> Fetch the complete documentation index at: https://guide.youraspire.com/llms.txt
> Use this file to discover all available pages before exploring further.

# /ContactCustomFields

Post/ContactCustomFields

SecurityHTTPType bearer

Bearer Authorization Token

Header parametersapi-versionstring | null

Query parametersapi-versionstring | null

Body parameters<select class='api-response-data' aria-label='Media type'><option value='b9e15436-164d-4cd9-b640-355aa73c3277'>application/json</option>
</select>object  ContactCustomFieldDefinitionIDinteger  (int32)    RequiredMinimum1.0Maximum2147483647.0
ContactIDinteger  (int32)    RequiredMinimum1.0Maximum2147483647.0
ColumnValuestring   | null  Min length0Max length2000

Responses200<select class='api-response-data' aria-label='Media type'><option value='8ad57df8-7618-4585-80dc-fdc71b165221'>application/json</option>
</select>integer  (int32)