Hello Team
I hope all is well 
I have a question here I am not able to figure out yet.
I have this dataset

I would like to test if the info in the column DataP-Out matches the Headers.
DataP-out is the last Date where we can have amounts.
What i want to is to compare the rows in the DataP-out with the Headers.
If the DataP-out matches the Header and the row is null/empty would show an "OK", else "error".
Unfortunately I have no idea how to manage it.
Could you please assist?
Thanks
Roddy 