> For the complete documentation index, see [llms.txt](https://apps.sanomads.com/dynamic-checkout-customizer/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://apps.sanomads.com/dynamic-checkout-customizer/use-cases/address-validation.md).

# Address Validation

How to validate the <mark style="color:yellow;">**Address lines**</mark> using Character limit on the checkout page?

{% embed url="<https://drive.google.com/file/d/1VLz73JBkACvzaKPQkVLnkbmrjHWvVpMu/view?usp=sharing>" %}
Address Validation
{% endembed %}

## Guide

1. Go to [<mark style="color:yellow;">**Settings**</mark>](https://admin.shopify.com/apps/dynamic-checkout-customizer/settings) page and click [<mark style="color:yellow;">**Address Validation**</mark>](https://admin.shopify.com/apps/dynamic-checkout-customizer/settings) tab.

<figure><img src="/files/xAlZH9MLmZrzpnekvVw4" alt="" width="563"><figcaption></figcaption></figure>

2. Add a new condition source <mark style="color:yellow;">**Address Line 1**</mark> from the Character Limit option.

<figure><img src="/files/0wSUjUffkncM987gf1gh" alt="" width="563"><figcaption></figcaption></figure>

3. <mark style="color:yellow;">**Save**</mark> and <mark style="color:yellow;">**Enable**</mark> the settings.

<figure><img src="/files/5vneLZcJBpyAZpY7Rj6M" alt="" width="563"><figcaption></figcaption></figure>

{% hint style="info" %}
Incase of custom Regex, please contact our [support](https://calendly.com/san-nomads/30-min-meeting?back=1\&month=2024-03) team.
{% endhint %}

4. Go to store [<mark style="color:yellow;">**Settings**</mark>](https://admin.shopify.com/settings), click Checkout and then select a checkout profile and click on <mark style="color:yellow;">**customize**</mark> button to start the customization process.

<figure><img src="/files/QEG4vdai9S6VSPxiiFGm" alt="" width="563"><figcaption></figcaption></figure>

5. In the [<mark style="color:yellow;">**Checkout editor**</mark>](https://admin.shopify.com/settings/checkout/editor), click on the <mark style="color:yellow;">**Add app block**</mark> button located at the bottom left corner of the page.

<figure><img src="/files/dV5yZqmMYcIwNeEJSnqf" alt="" width="563"><figcaption></figcaption></figure>

6. Select the <mark style="color:yellow;">**Checkout - Address Validation**</mark> app block for Address Validation.

<figure><img src="/files/A93V2bArHrri5Z4vd8pW" alt="" width="563"><figcaption></figcaption></figure>

7. Click on the <mark style="color:yellow;">**Save**</mark> button to publish the changes live for the customers. Refresh the page to view the changes on the checkout page.

<figure><img src="/files/pKb3Tr71MTLVPUi2i4uM" alt="" width="563"><figcaption></figcaption></figure>

## Why does it matter?

<mark style="color:yellow;">**Address Validation**</mark> customization for validation of Address lines can reduce the Shipping and Logistics cost by <mark style="color:yellow;">**10%**</mark>.