Validate Due Date less than 12 months

Question

I have a field named "Due Date" and I am trying to add validation so users cannot enter a date more than 12 months from today (current date). This is SP2010.

I've tried this formula in the List / Validation Settings.

=[Due Date] < DATE(YEAR(Today()),MONTH(Today())+12,DAY(Today()))

I can't get it to work. I enter a due date which is greater than 12 months from now and it doesn't show me the user message. It allows me to enter the date.

What am I doing wrong?

Answer 1

Try using this:

=[Due Date] < DATE(YEAR(Today())+1,MONTH(Today()),DAY(Today()))

Output:

Note: Add this formula inside Column Validation under Column Settings.