'That invoice no longer exists.'])); } $client_id = intval($invoice['client_id']); enforceClientAccess(); if (!billingCanEditItems('invoice', $invoice)) { exit(json_encode(['error' => billingNumber('invoice', $invoice) . " can't take more lines - it is paid, cancelled or non-billable."])); } $trips = tripUnbilled($client_id); $currency = (string) $invoice['invoice_currency_code']; $taxes = billingTaxes(); ob_start(); ?>