Interesting that SAP's front end sucks so much that there is money to be made selling Excel as the data entry interface.

It seems that this has also been the case with Orcale ERP. For 20 years a Hamilton based company has been globally selling their Excel data entry front end to Oracles product suite.  

The company is called More4Apps and their products utilize thousands of lines of Visual Basic for Applications ( VBA ) code running in the Excel spreadsheets they provide.

I've often wondered if they would be better off to switch from using the Excel / VBA combination to Calc / PyUNO Bridge / Python3 and that way they avoid having to use VBA.