Duplicate

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

This delegate is already registered as a proxy for the delegator with the same proxy type and delay. Check the delegator's Proxies entry before calling add_proxy with the same (delegate, proxy type, delay) tuple.

Declared by the Proxy pallet; it classifies to the semantic code already_exists.

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 Duplicate.