(solved)-–-data-cell-validation

(Solved) – Data Cell validation

"AND((ISNUMBER(SUMPRODUCT(SEARCH(MID(BG1,ROW(INDIRECT("1:"&LEN(BG1))),1),"0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ")))) ,(LEN(BG1)