> For the complete documentation index, see [llms.txt](https://docs.powerfulform.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.powerfulform.com/troubleshooting/phone-already-taken.md).
# Error: Phone already taken
Fix the 'phone has already been taken' error on a registration form.
## 🔍 Why This Happens
This is **Shopify's own validation, not an app bug**. When a registration form submits a **Phone number**, Shopify checks whether that number is already attached to another customer. Depending on your store settings, Shopify may block the request and return:
> *"Phone has already been taken."*
✅ **Nothing is broken** — Shopify is just enforcing unique phone numbers per customer.
**Common causes:**
* Testing multiple submissions with the same phone number
* Different people sharing one phone (family or company line)
* Your store requires phone numbers to be unique per customer
**Example:**
> A family shares one landline.
>
> The parent already has a Shopify account with `+1 555-0100`.
>
> Their teenager fills in your registration form using the same number.
>
> Shopify blocks the new account with **"Phone has already been taken"** — even though the form and app worked correctly.
## 🔧 How to solve it
{% stepper %}
{% step %}
Open the app > click **Forms** > open the form you want to edit
{% endstep %}
{% step %}
Click the **Integration** icon on the left side > enable **Shopify** > click on **Shopify** option
{% endstep %}
{% step %}
Find **If customer already exists** > select **Continue and ignore the error**
{% endstep %}
{% step %}
Save
{% endstep %}
{% endstepper %}
#### 🔄 What Changes
Before
After
Duplicate phone → submission fails
Duplicate phone → submission continues
—
No new customer created, no changes made to the existing one
**Same example, after the fix:** The teenager's submission goes through with no error — but since Shopify skips the duplicate rather than updating anything, the parent's existing customer record stays exactly as it was.
> **⚠️ Note:** This option does **not** update customer info. If you want the submission to update fields like phone, name, or address on the matching customer, use **Continue and update customer information** instead — see Error: [Customer already exists.](https://globosoftware.gitbook.io/globosoftware-docs/troubleshooting/customer-already-exists)
## Next steps
* [Shopify Customers integration](/customers-and-registration/customer-fields.md) — the integration that creates the customer.
* [Error: Customer already exists](/troubleshooting/customer-already-exists.md) — the same class of error.
* [Contact support](/help/contact-support.md) — if the problem is still there.
