How to investigate the issue
A reorder point helps a seller decide when to order again. Start by measuring actual daily units sold from a consistent period; do not use sales revenue in place of units. Multiply daily demand by supplier lead time in days to estimate how many units may sell before replenishment arrives. Add a safety-stock buffer that covers expected volatility or supply delays. For example, 12 units per day over nine days plus 30 safety units yields 138 units. Reorder when inventory position approaches that level, considering outstanding purchase orders and backorders. This simple method does not predict future demand, seasonal spikes or disruptions. If demand is variable, compare historic periods and test a conservative buffer. If suppliers deliver in partial shipments, update the assumptions before ordering. The reorder point is a decision threshold; it is not the same as purchase quantity. Keep inventory data current and examine the cost of lost sales against storage costs.
Relevant free diagnostic tools
Official reference
Google Merchant Center product data specification. Check current policies and your account for definitive eligibility details.