The core issue is that sales and production data are separated. The first step to improvement is making sales data systematically organized and reviewable: which products, in which seasons, to which markets, and in what quantities. With this historical context, inventory planning has a foundation instead of relying solely on business intuition. Further, you can integrate order data with your ERP, allowing purchasing, production, and warehouse teams to directly see demand dynamics without relying on manual communication or report compilation. Keep in mind that sales data only tells you "what was sold in the past." Seasonal fluctuations and exceptional situations like sudden large orders still require business judgment—data is a supplement, not a replacement.