How to set up custom fields for Salesforce on 123FormBuilder?

You can associate Salesforce custom fields with the fields in your form. Follow the simple steps below:

1. Create the custom fields in your Salesforce account. Watch Salesforce’s video tutorial on how to create Salesforce custom fields.

2. Go to your form builder account on 123FormBuilder and enable the Salesforce integration in the Integrations section.

3. Click on the Customize button and scroll to the bottom of the lightbox that shows up. Tick the checkbox that says I want to use custom fields. All your custom fields will appear below, on the left side.

custom fields salesforce for forms

Use the drop-down lists on the right to associate your form fields with the Salesforce custom fields on the left.

Important Note! Custom fields are not the same as custom objects. A custom object can include one or more custom fields, but a custom object cannot be associated with a form field in the 123FormBuilder – Salesforce application settings.


  1. If I read this correctly I would not be able to import fields from the 123form on our website to a Salesforce custom object with custom fields.

    We have a 123form on our website that would contain data for Account, Contact and a Custom Object with Custom Fields. Will I be able to import all of that data?

  2. Is there a way to have contact form fields populated picklist fields for Slaesforce? More generally, What are the restrictions in terms of Salesforce field types that can be used? I don’t see Date Fields, checkboxes, lookups, or picklists showing up on in the custom fields section of the 3rd party app for SalesForce

    1. Hello Simon!

      I apologize for replying this late. We’ll look into your inquiry. In the meantime, feel free to contact our customer support specialists and detail your scenario. Our Support Team can be contacted at the email address

      Whenever you require assistance, don’t hesitate to send us an email at


  3. I have created a form in 123 contact and I used checkbox for some of the fields. I am trying to map those over to a form in a lead form in salesforce. Is this possible and if so how do I go about doing it. I have tried several times but its not working.

    1. Hello John!

      I don’t think it would be possible to do that, but you could use our 123FormBuilder – SalesForce integration to directly create leads or contacts in your SalesForce account. Just follow our documentation here to learn more about how to enable the integration and map the fields you need. You could even use one of our free form templates, such as this sales lead form.

      If you have further questions or need assistance, please do not hesitate to contact our support specialists at or via our contact page.

Leave a Reply

Your email address will not be published. Required fields are marked *

Frequently Asked Questions

Here is a list of the most frequently asked questions. For more FAQs, please browse through the  FAQs page.

Is this service free?
Yes, we offer a free form builder service. Just sign up to the Basic plan and you are all set. This plan is forever free, but you are limited with a few features only, such as 5 forms per account, 100 submissions per month and you have to keep the backlink to 123FormBuilder on your forms. Check out our features matrix for more information.
How many forms can I create?
It depends on the service plan you are on. Higher service plans enable more features, including more web forms for your account. If you need more forms, go to the My Account section of your account and click the upgrade button. To create an unlimited number of forms, either upgrade to the Platinum service plan or higher. Consult our features matrix for more information.
How can I publish my forms?
You can publish your forms in many ways, by using their direct URL or HTML link, embedding them with a JavaScript code, Inline HTML or iFrame, using the Facebook app or the WordPress plugin, using popups, the Blogger code snippet and many more. Once you have created and customized your form, go to the Publish section to complete your work. Read more in our documentation.
How do I change my form design?
You can change the design of your form for more information. in the Themes section, which is located in your form settings. We offer a set of more than 30 predefined form themes for your forms, but you can also create your own from scratch. You can customize the submit button, the logo and more. To apply your own stylesheets, all forms come with a custom CSS editor.

Can't find what you're looking for?