Errors/Chain errors
BurnEmissionMustBeZero
The action exceeds a configured safety policy
Deprecated. Slot 0 (burn) may now be non-zero; burn and recycle together may be at most 33% (BurnRecycleEmissionAboveMaximum).
Declared by the SubtensorModule pallet; it classifies to the semantic code policy_violation.
Declared at pallets/subtensor/src/macros/errors.rs#L434.
Remediation
The action exceeds a configured safety policy
The same explanation is available in the terminal: btcli explain BurnEmissionMustBeZero.