Validate copied data in excel

Hi, I have a below scenario

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.

e.g

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)

so edited values should be

R1 changed - 1 2 3 4
R2 changed - 1 2 3 4