Model machines, BOMs and options

Set up — Configurable Products & Spare Parts.

Structure it once, properly. The decisions here are the expensive ones to change later — an association type that should have been quantified, a machine modelled as a description instead of a record, a drawing overwritten rather than revised. Each of those is a re-entry of every affected position, not a setting.

Take one machine series or one configurable model and do all five of these for it completely before you scale. Narrow and complete beats broad and approximate in this area, because the failure mode is not a gap — it is a confident wrong answer delivered to a stopped machine.