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# Why aren't all products with zero sales included in the "Lost Sales" report?

The [Lost Sales](https://bi.datawiz.io/tutorial/article/reports/lost-sales) report includes those products that have had constant sales or stocks until now, but have not been sold for at least one day during the selected period. In addition, these products are tested for asymmetry in the distribution of the dynamics of sales qty. Accordingly, the report shows only products that have symmetrical sales dynamics.