---
page_type: error
code: 21628
message: "21628: Address Validation Error"
level: ERROR
product: Phone Numbers
---

## Error - 21628

### Address Validation Error

The address you have provided cannot be validated.

#### Possible Causes

- Address misspelling
- Address cannot be found in third-party data source

#### Possible Solutions

- Ensure the address is spelled correctly
- Contact Twilio Support