# E15015 — WhatsAppContentRequired

The message carries no content.

- **HTTP status**: `422`
- **Type**: `validation_error`
- **Name**: `WhatsAppContentRequired`

## What to do

Add one kind of content to the request. A template is the only content deliverable outside an open 24-hour customer service window.

## Related

- [E15xxx — WhatsApp sending & delivery](/docs/api/errors/E15xxx): every code in this range
- [Errors](/docs/api/errors): the full wire contract, status mapping, and error catalog
- [Error handling](/docs/guides/errors): branching on `type` and `code`, validation details, and `vendor_code`