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# Address Validation
1. **Description:**
The Address Validation block ensures that customers enter valid shipping addresses during checkout. This helps prevent delivery issues, reduces shipping errors, and enhances customer experience. It also includes autocompletion features to speed up the checkout process by suggesting accurate address entries.
**How to Use:**
* Create a New Block
* In the app, navigate to the Blocks section.
* Create a new Address Validation Options block.
* The system will generate a unique Block ID for this block.
**How to Enable:**
* Go to the Blocks section in the app settings. Copy the created checkout Upsell block to generated Block ID.
* Go into the store customizer
* Then you need to "add app block" and search extension "Checkout fields, Gift, and Address validation" and add it. Click to added extension block and enter the Block ID in the block settings and save the configuration.. **Check Screenshot**
* Set the location where the Address validation Options should appear on the checkout page.
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