Error: 0x80043b0a , "The Unit Schedule id is missing"

Hi!

I have a problem when I'm trying to import products to crm 2015

When importing i am getting"The unit schedule id is missing " error.  I saw in other forums that  could be for "Default Unit" and "Default Price List" and I changed this field to be Business Required but nothing.

Any idea of what it can be?

Thanks!