Downloads the beneficiary accounts of the authenticated account as a file, under the same with_archived filter as the list. The file carries a brand header, a UTF-8 BOM, and a "Status" column — Active or Archived — so each account's state survives the download. Numbers come out masked except the CLABE. A card is exported as 4111 •••• •••• 1111 and a phone as ••••5678; the CLABE is exported in full. The criterion, and the other masked surfaces, are covered in data masking. The format is chosen with ?format: csv by default, xlsx as the alternative. The row cap is 100,000, and ?limit asks for fewer — never more — which is what the panel's download uses to preview a short file.