Three reasons the systems you bought will not close the gap.
Three structural failures appeared again and again. They are not implementation problems. They are design assumptions baked into systems of record that were never asked to be systems of action.
Forecasts ignore true constraints.
The MRP releases work orders against a clean demand signal. It does not know which buyers can actually deliver, which lines are running below OEE, or which customer's forecast was optimistic. The plan assumes a frictionless world.
Static min and max inventory settings led to frequent stockouts and ongoing reliance on costly expediting.Supply chain manager, Midwest U.S.
Standard systems break on exceptions.
ERPs handle the 70% beautifully. The 30%, rush jobs, missing kits, spec changes, equipment surprises, gets routed to email, hallway, and spreadsheet. That is where the cost lives, and that is where the system goes silent.
The standard tools did not fix it because they were too static. The floor was changing in real time, but the system was not keeping up.Plant manager / GM, Southeast U.S.
Handoffs nobody owns.
A handoff between departments is a process, not a feature. The ERP stops at the boundary. The next person picks it up, or does not. Multiply by every shift change, every kit, every spec. The accountability vacuum is by design.
No one wanted to accept responsibility for one standardized system, but everyone wanted to use their preferred system.Floor supervisor / team lead, Southeast U.S.
None of these are problems your next ERP module will fix. They are the natural shape of static, transactional systems running an operation that is dynamic and exception driven by nature.