# RecycleEmissionMustBeZero (/docs/errors/chain/RecycleEmissionMustBeZero)

Deprecated. Slot 1 (recycle) 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`](/docs/errors/policy-violation).

Declared at [`pallets/subtensor/src/macros/errors.rs#L437`](/code/pallets/subtensor/src/macros/errors.rs#L437).

## Remediation [#remediation]

The action exceeds a configured safety policy

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