Item import failure

Hi,
Is there someone can help us to advise what below failure means? Any suggestions would be appreciated !

I am trying to import items. And, Cannot import all items due to “Failure” as “Duplicate name Item Supplier already exist”. I believe this duplicate failure show up when ITEM CODE is same. In my case all importing item code is different and most of them Supplier ID is same, however duplicate failure appears.

Thanks,
Jon!