BOM quality is planning quality
MRP output is only as reliable as your BOMs and lead times. Before rollout, review the main products’ BOMs with production and engineering and record realistic scrap allowances.
Take each material’s lead time from purchase history, not the supplier’s promise. With optimistic lead times, MRP flags shortages too late.
Pilot on one line or product family. When MRP proposals have matched the planner’s decisions for a few weeks, widen the scope.
Set routings and standard operation times from real time studies, not old estimates. Capacity planning with unrealistic times points to the wrong bottleneck.