# NewColdKeyIsHotkey (/docs/errors/chain/NewColdKeyIsHotkey)

The proposed new coldkey in a coldkey swap is already an existing hotkey account, which is not allowed. Check the `Owner` storage for the candidate key to confirm it is not registered as a hotkey, and pick a fresh coldkey.

Declared by the `SubtensorModule` pallet; it classifies to the semantic code [`invalid_argument`](/docs/errors/invalid-argument).

## Remediation [#remediation]

Check the argument values against the operation schema

The same explanation is available in the terminal: `btcli explain NewColdKeyIsHotkey`.