one row is copied and pasted, this pasted row needs data validation such that total of each cell shouldn't exceed the respective cell of parent row.
R1 2 4 6 8
R2 (copy of R1) 2 4 6 8
changing values of both the rows above.
R1 changed - 1 2 3 4
R2 - changed 3 5 7 9 - over here can we trigger an excel macro on click of save ? such that value e.g "3" in R2 changed row shouldn't be allowed as total of (1+3) should be equal to original value i.e "2" (refer R1 first cell)
It might just be a confusing example, but all I get from your query is that R2 needs to match R1.
Also, Excel doesn't keep track of all the different entry's made to a cell. So the Original value might be 2, when it is replaced by 1, then the 2 is lost. If you want to keep track of your entries use another row.