# PulseVerificationError (/docs/errors/chain/PulseVerificationError)

BLS signature verification of a submitted drand pulse against the stored beacon configuration failed. Check the pulse's signature and round against the `BeaconConfig` storage (drand quicknet public key).

Declared by the `Drand` 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 PulseVerificationError`.