[Solved] Repeating series of numbers-unique id needed

by


Doable with formulas and and helper column:

In column E (Helper): =IF(A2=A1,"",A2)

In Column C (Output): =IF(E2="",C1,CHAR(COUNTIF($E$2:E2,E2)+64))

enter image description here

0

solved Repeating series of numbers-unique id needed