When importing products, it shows "0 items can be imported" and "Next" cannot be clicked. What should I do?

1. In "Review and Correct", check if it displays "Data processing not complete: comparing products already in the system". Rows being compared are not counted as importable, so showing "0 items can be imported" does not mean the data is wrong. Please wait for the comparison to complete. 2. After comparison is complete, as long as there are importable rows, you can click "Next" without needing to correct all rows with errors. 3. When re-reading the same delivery, products that already exist are set to "Supplement Photos Only" by default and will not be recreated.