if err := scp.unpackVaultLog(event, TransferOutAndCallEventName, log); err != nil {
    return nil, err
}
// No further validation on event.Amount or other critical fields after unpacking
if err := scp.unpackVaultLog(event, TransferOutAndCallEventName, log); err != nil {
    return nil, err
}
if event.Amount == nil || event.Amount.Sign() <= 0 {
    return nil, fmt.Errorf("invalid or zero amount in TransferOutAndCall event")
}
if err := scp.unpackVaultLog(event, TransferOutAndCallEventName, log); err != nil {
    return nil, err
}
// Lack of validation on the Amount, potentially leading to processing of invalid transaction data.
