---
page_type: error
code: 45789
message: "45789: Deployment key is already linked to other address  configuration sid."
level: WARNING
product: Flex
---

## Description

Deployment key is already linked to another address configuration Sid.

### Possible Causes

You cannot link deployment key to multiple address configuration Sids.

### Possible Solutions

First unlink the deployment key from current address configuration Sid.