The program looks like Excel except it isn't. In some cases you have to enter the data in a different column, in some cases you have to enter 0, in some cases y

The program looks like Excel except it isn't. In some cases you have to enter the data in a different column, in some cases you have to enter 0, in some cases you leave it out. It could be SAP or some other old fashion ERP system. Or some old Java/C# application built for the hospital. These have usually in common a very crude old fashion UI and things like changing a record is overly complex. Often also the workers don't know the program good enough. So they only know the standard use case. If you fall out of the 95% use case, you get into a lot of trouble because of their inexperience with the application. If they try new things put to mitigate the issue, it's better to ask for their boss or things can go worse.