Hello everyone, in need of a validation rule where you can only enter any combination of the 7 letters "fgyaeir" (without replacement). Thus only allowing entry of combination of the 7 letter. e.g. r; eag; ygfaeir; are all valid entries wheres these are not: any letter not in the combination: rp; efgh....etc and if one of the letters is repeated in the entry e.g. rre is not valid since r appears twice.
hope this clarifies, thanks.Book3.xlsx