You pull from ERP, CRM, warehouse systems, and spreadsheets maintained by different departments. By the time the data is consolidated, the planning cycle has moved on. According to Gartner's 2022 Supply Chain Planning survey, demand planners spend an average of 67% of their time on data collection and reconciliation — leaving barely a third for actual analysis and decision-making.

Critical supply and demand decisions depend on spreadsheets that break when someone edits the wrong cell, contain formulas only one person understands, and cannot scale across multiple plants. When your best planner is on vacation, the planning process degrades — because the institutional knowledge lives in their personal spreadsheets, not in a system.

Your S&OP meetings run on data that was accurate three days ago. Market signals, order changes, and supply disruptions that arrived since then are discussed verbally — not reflected in the plan. The gap between the plan presented and the reality on the ground widens with every hour between data freeze and meeting time.

By the time a material shortage surfaces in the weekly planning meeting, the production schedule has already been disrupted. Expediting costs, air freight premiums, and overtime to recover lost production compound the impact. The shortage was foreseeable — but the data that would have revealed it was locked in a supplier portal or an ERP transaction log that no one checked in time.

Customers enforce on-time-in-full requirements with financial penalties that range from 3% to 10% of invoice value (Retail Industry Leaders Association, 2023). When your plan does not reflect reality, deliveries slip — and the cost shows up on the P&L. A single missed shipment to a major retailer can trigger penalty charges of $10K-$50K.