When you enter childrens info the error will go away 

Thanks, the dependents names and ssn are entered in part 3.  If i try to enter it in part 2 another error arises saying don't enter info of dependent child shown below.  If i go from head of household to single everything clears but the tax consequences are different.   

whats the relationship youre choosing for the children?  and did you mark that the children lived with the taxpayer?

Do not enter in part 2 only part 3

 

natural children.  If i mark single no problem but more taxes owing.  if i mark head of household the blocks for non dependents light up.  The children are listed in part 3

there is no choice for natural children, are you marking son/daughter and in the very last column of the dependent table, choosing that they lived with the taxpayer, Code L?