# E04032 — ContactPropertyKeyExists

A contact property with this key already exists in this workspace.

- **HTTP status**: `409`
- **Type**: `conflict_error`
- **Name**: `ContactPropertyKeyExists`

## What to do

Another property already uses this key. Choose a different key, or find the existing property and reuse it.

Operations that resolve this:

- [List contact properties](/docs/api/reference/list-contact-properties)
- [Get a contact property](/docs/api/reference/get-contact-property)

## Related

- [Idempotency](/docs/api/idempotency): safe retries and key reuse rules
- [E04xxx — Email sending & delivery](/docs/api/errors/E04xxx): 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`