It a big file. If you change he duration in B13 and B21 itwill chang from havingvalues from sheet 3. to having 0. But for some reason which it is 0. is gives #value
I am not able to understand what you want to do ; you have two intermediate calculations in H18 and H21 , where you have selected a font colour of WHITE so that the cell does not display anything.
These same intermediate values are used to calculate values in D18 and D21.
The formula for calculating the values in D18 and D21 can have the IF statement with the message "No information" , but why should the formulae in H18 and H21 have this ? The formula in H18 and H21 can use a value of 0 instead of a text value such as "No information" , since anyway the value in these cells is not being displayed.