Errors/Chain errors
SubnetBuybackRateLimitExceeded
Wait for the rate-limit window to pass, then retry
A subnet buyback operation (staking TAO and immediately burning the acquired alpha, e.g. via add_stake_burn) was repeated within its rate-limit window. Wait for the window to pass before retrying the buyback.
Declared by the SubtensorModule pallet; it classifies to the semantic code rate_limited.
Remediation
Wait for the rate-limit window to pass, then retry
The same explanation is available in the terminal: btcli explain SubnetBuybackRateLimitExceeded.