Overview
Error messages help users understand what went wrong and how to correct it. They must be clear, consistent, and aligned with Sequoia’s voice and tone. This specification defines the standard patterns, behaviors, and field‑level messages used across all Lithia & Driveway digital products.

Use contractions to keep the tone approachable.
Avoid “please,” which can imply optionality.
Provide format or character requirements when needed.
One sentence is preferred; two maximum.
Use sentence case with a period.
| Trigger | Usage |
|---|---|
| On blur | Empty field validation |
| Stop writing | Format, regex, and max‑length validation |
| Message | Error Type | When it happens |
|---|---|---|
| This field can't be left blank. | Empty | On blur or when the user stops writing |
| Use {max} characters or fewer. | Max Length | While typing |
| Enter a valid {field name}. | Invalid / Wrong field | While typing |
| Select a {field name}. | Invalid / Not an option / Empty | While typing |
| The applicant must be at least 18 years of age. | Min Value | Not specified |