How can I record extra fields as a note in the customer file?

Topic summary

A user is attempting to add two custom fields (Company name/Société and Company ID/SIRET) to their Shopify registration form using the IMPACT theme, but these fields aren’t saving as notes in customer files.

Current Issue:

  • Custom fields display on the registration form
  • Data isn’t being recorded in customer notes as intended
  • Error message appears on the registration form (screenshot provided)

Proposed Solutions:

HTML Input Method:

  • Use HTML input format: <input type="hidden" name="customer[note][Field Name]" value="{{ form.field_name }}" />
  • Based on Shopify’s official documentation for additional customer information

App-Based Alternative:

  • Helium Customer Fields app (14-day free trial)
  • Saves custom data directly to customer metafields
  • Also offers option to save data into customer notes
  • No coding required

Status: The user tested a Liquid-based code approach that displays the fields but generates errors. The discussion remains open, with translation/localization aspects still unresolved.

Summarized with AI on November 14. AI used: claude-sonnet-4-5-20250929.

Hello Bret,

I tried an other code

{%- assign companyname_label = ‘customer.register.companyname’ | t -%}
{%- render ‘input’, name: ‘customer[note][Société]’, label: companyname_label, autocomplete: ‘’, required: false -%}

{%- assign companyid_label = ‘customer.register.companyid’ | t -%}
{%- render ‘input’, name: ‘customer[note][SIRET]’, label: companyid_label, autocomplete: ‘’, required: false -%}

It works well but I have this error message on the register form. I need to see company ID and company name.

Could you help ?