# ChangePending (/docs/errors/chain/ChangePending)

A GRANDPA authority-set change has already been signalled and is still pending, so a new change cannot be scheduled. Check the Grandpa `PendingChange` and `State` storage and wait for the pending change to be applied first.

Declared by the `Grandpa` pallet; it classifies to the semantic code [`already_exists`](/docs/errors/already-exists).

## Remediation [#remediation]

The object or state already exists; treat the goal as met or pick a different target

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