To add to the other replies here. From my perspective and experience, the actual reality of manufacturing anything complex does not match up with the set of ru

To add to the other replies here. From my perspective and experience, the actual reality of manufacturing anything complex does not match up with the set of rules that has to constrain any given ERP platform to be a useful, data-based record. Allow too much freeform data, and start losing more and more analysis ability. Too strict, and you quickly crash against the fuzziness of reality. All the while requiring that your data be as close to 100% accurate as possible. That's the crux of the problem. Modern, complex engineering/manufacturing requires a level of traceability that cannot be handwaved away. Now contend with this problem against a bill of materials tens of thousands of lines long with nearly a million discrete items put in, all with their necessary interdependecies recorded. Now do this across an entire product line. https://michelbaudin.com/2018/08/01/the-bom-rap/#more-1263640 https://michelbaudin.com/2018/08/01/the-bom-rap/#more-126364... ^ A good read on the complexity of BOMs and why managing them can be tricky.