# NegativeSigmoidSteepness (/docs/errors/chain/NegativeSigmoidSteepness)

A non-root caller (subnet owner) passed a negative value to `sudo_set_alpha_sigmoid_steepness`; negative steepness values are reserved for the root origin. Use a non-negative `steepness` or submit the call as root.

Declared by the `AdminUtils` pallet; it classifies to the semantic code [`invalid_argument`](/docs/errors/invalid-argument).

## Remediation [#remediation]

Check the argument values against the operation schema

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