Item count is 395, but should be 393? I don't understand. Where're the extra pieces came from? Please comment. Thanks.

Loading Tax Groups ... OK
Company Profile ... Checked OK
Orphan Item S28873 secondary record will be deleted.
Items ... 1 error(s) found
Alternative Price List ... Checked OK
Category BLB item count is 395, but should be 393
Category STL item count is 537, but should be 530
Category ZZZ item count is 4566, but should be 4565Categories ... 3 error(s) found