As I discussed in articles 3 and 4 of this series (How a Single Source of Truth Can Transform the Infrastructure Design Industry and Why You Need to Get the Design Process Correct, respectively), it's better to involve a system earlier rather than later.
Njengoba ngifundile emaNdabeni 3 no-4 alolu chungechunge (Ukuthi umthombo owodwa weqiniso ungaguqula kanjani imboni yokwakhiwa kwengqalasizinda nokuthi kungani idinga ukulungisa inqubo yokuqamba, ngokulandelana), kungcono ukubandakanya uhlelo ngaphambi kokuba kudale kakhulu.