As lng as the data in these spreadsheets goes back into SAP. If it doesnt' you can kill SAPs MRP. I saw that happen. Which is then kind of hell's hell. And then the spreadsheet-users complain about SAP.
Yeah - one of the outfits I mentioned had a bit of a catastrophe due to this - BOMs in SAP and XLS were different, they made a medical product (for children) that exceeded RoHS and REACH lead and mercury thresholds. They made millions of units before the mistake was realised. Oops.