Why do I have to log online to send invoices that contain CIS. Why can't this be done in the app?

Hi kirstygooch_flp Thanks for reaching out to us here on the Community, welcome. The app has limited capability in comparison to when you use the online version, there is only so much functionality/data that the app is capable of processing. With this in mind some functions, including, CIS, have to be processed by logging in directly.