---
title: Signup Variables Prefill in UII
slug: generic-onboarding/signup-variables-prefill-in-uii
createdAt: 2024-04-05T14:27:20.456Z
---

If you want to use the signup flow, you need to map the signup page variables such as name, email, phone number, etc. into the [User Initial Input](docId\:abD5BHn0O36L4TNeShBzy) Page. Since the [Create Merchant API](docId\:wL7Ihdsc9Rhq92Qs8OW6p) gets the parameters from the User Initial Input Page, it is a necessary step to prefill it.

![](https://api.archbee.com/api/optimize/w0YdjmC6Uxu0AJ6sPj9OT/z4vo5x3dHCy7IRNyMgQAU_a.gif)