Getting an Error on Asset Entry (smart phone)

I've run the review of my taxes.  I'm getting an error "Eligible Sec 179 property has an unacceptable value."  I have entered an asset to depreciate (smart phone) with 50% business use.  Line 42 on the forms page of the Asset Entry Worksheet is marked Yes.  What should I do to correct this error?  Should I just expense the item (it is over $250)?