InvalidDerivedAccount

Deriving the sub-account for as_derivative failed to decode into a valid account id from the (caller, index) entropy. Check the index argument and the caller account used for derivation.

Declared by the Utility pallet; it classifies to the semantic code invalid_argument.

Remediation

Check the argument values against the operation schema

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