What is the limit on file size Duco can accept? August 26, 2019 19:01 ~ minute read Follow 2MB for Excel, but only upon set-up. After that there is no limit on file size. Related articles Is there a limit on how many files can be included in a zip file? What’s the maximum number of lines of data that Duco can process in a single process? Duco 102 - build walkthrough ISO 20022 Bank to Customer Statement Reference data tables