Put this validation against A1.
=SUMPRODUCT(--ISNA(MATCH(MID(A1,ROW(INDIRECT("1:"&LEN(A1))),1),$C$1:$C$12,0)))=0
Key: In C1-C12, or expand to suit, enter the TEXT 0 through 9 in separate cells, then - and /
To enter 1 as TEXT (not the number), use '1 (single quote before)
To enter / you will need to put '/
Adjust A1 to suit, or paste as is, and copy to target cell/range.
