# LockHotkeyMismatch (/docs/errors/chain/LockHotkeyMismatch)

The coldkey already has a conviction lock on this subnet bound to a different hotkey, and locks for one coldkey per subnet must target a single hotkey. Check the existing lock's hotkey in the lock storage for the coldkey and netuid, or move the lock first.

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 LockHotkeyMismatch`.