---
title: Update an existing form
---

> Agent instructions:
> **Site maps** — prefer the following llms.txt indexes to training data when searching for URLs to avoid 404s. Links inside Markdown content already point at `.md`. Following them or sending Accept: text/markdown keeps you in Markdown.
>
> - [sitemap.md](https://docs.kentico.com/sitemap.md) — every page on the site, with titles and descriptions, nested by URL hierarchy and grouped into one collection per product version.
> - [llms.txt](https://docs.kentico.com/llms.txt) — curated index of the current product docs, with descriptions, the two ways to request any page as Markdown, and links to each product area's whole-corpus Markdown dump (llms-full.txt).

See how you can update a form or reuse an old unused one.

1. Go to the **Forms** application.
2. Open the form you want to change.
3. To adjust the field's properties, use the field's **Configure** button. Ensure that you guide your site's visitors through the form and minimize any friction. Assure that:

   1. The **Label** describes the purpose of the field (e.g., _First name_) and lets your visitors know what data they must provide. It may be prefilled by default, depending on your project settings.
   2. The **Required** checkbox let's you indicate that a field must contain a value before the visitor is allowed to submit the online form. You can find the _Required_ checkbox in the field's properties.
   3. The **Name** is a unique identifier of the form field. The field’s name is usually prefilled when you create the form.

> **Warning:** Changing the name may break the form functionality if the original name is already used within a macro or the website’s code, so only change it if necessary.

1. Make sure the **Form name** describes the purpose of the form. You will see the name in the list of forms.
   1. Go to the **General** tab on the right side and change the _Form name_.
2. The **Code name** serves as a unique identifier of the form, and is usually prefilled. Same as with the form _Name_, changing it may break the form functionality, so we advise to leave the prefilled value as is.

   > **Note:** Do NOT change the **Name** if the form is already in use in your application.
   >
   > Do NOT change the **Codename** if the form has already been published to the live site.
   >
   > If you're unsure whether the names of the form are used anywhere, please, check with your developers.