Hi there,
Due to other formula's relating to the cell containing this data validation, I need to amend it slightly.
It currently looks like this;
=OR(AND(ISNUMBER(B13),LEN(B13)=3),AND(ISNUMBER(LEFT(B13,3)+0),ISNUMBER(RIGHT(B13,3)+0),ISNUMBER(SEARCH("/",B13)),LEN(B13)=7))
I would like to...