# InvalidSchedule (/docs/errors/chain/InvalidSchedule)

The pallet's schedule is misconfigured, e.g. a zero weight or zero `ref_time_by_fuel` for a basic operation, making gas conversion impossible. This is a runtime configuration issue; inspect the `Schedule` constant rather than call arguments.

Declared by the `Contracts` 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 InvalidSchedule`.