Following formula returns the number of days between the two dates:
DATEDIF(Date1, Date2, "d")
Which is equivalent to
Date2 - Date1 and return the days only.
In your case, you are subtracting "Date entered 6." from "Date Entered 5.".
So for the items which has
[Date entered 6.] > [Date Entered 5.], calculated column returning as
Use Validations on dates so that
Date Entered 5. will always be greater than
Date entered 6..
Use ISERROR() function:
ISERROR() takes only one parameter and returns
FALSE. It is typically used inside an
IF() statement to evaluate a formula. What you probably want is something like
=if(ISERROR(DATEDIF([DATE1] , [DATE2] ,"d")),"0", DATEDIF([DATE1] , [DATE2] ,"d"))
In words: If the
DATEDIF function returns an error, use "0", else use the result of the
For Your Case, Following formula will work:
=IF(OR(ISBLANK([Date entered 6.]),ISBLANK([Date Entered 5.])),"No KPI dates",IF(ISERROR(DATEDIF([Date Entered 5.],[Date entered 6.],"D")),"Date entered 6 is less than Date Entered 5",DATEDIF([Date Entered 5.],[Date entered 6.],"D")))