one company my employers acquired had oodles of stuff on spreadsheets written by steve in accounts and modified by louise in purchasing without any checks and the results were biblical commandments with outputs resulting in pestilence and plague – first stage metals processing (laser cutting etc) most were inventory planning related, what customer part could be cut from what inventory item, how many parts, what other customer parts came from same item and could be nested, what if demand from customer Y increased/decreased and lead time for start stock was X months etc. Multiple related stock items – some customs bonded but physically identical, some different dimensions but could be used to produce same customer part etc.
not a techie but think ended up with some sort of java enabled overlays to the accounting/stock control unix based system that enabled easy entry of related product data/parts data/sorting/filters and the ability to run on screen what ifs with the actual logic coded away from fat fingers