ValidatorEmissionTooLowToPreserveRoot

Slot 3 (validator) of the emission weight vector is at or below root's baseline share. Every block the chain pays root min(V, r) of the subnet's emission off the top of the validator slot, where r = V0 * x / (x + A) is what root would earn with the default validator share V0 (0.41) and the global TaoWeight (x = root TAO times that weight, A = the subnet's alpha issuance), recomputed from live state; alpha validators get V - min(V, r). A set with V <= r would leave validators nothing, so it is rejected. btcli subnets emission show --netuid <n> prints the baseline and the floor for this block. Raise the validator share above it and resubmit.

Declared by the SubtensorModule pallet; it classifies to the semantic code policy_violation.

Declared at pallets/subtensor/src/macros/errors.rs#L452.

Remediation

The action exceeds a configured safety policy

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