Hi, try this
For column A, first select the cell or cells you need to be restricted
then go to Data/Validation and select Custom from the Allow menu, in
the formula box type:
=UPPER(A1)="ACTUALS"
A1 being the first cell in your selection, then click on the Alert tab
and type your message or warning, click Ok
For column B the formula would be something like:
=LEN(B1)=6
or if the account number contains only numbers and no text then:
=AND(ISNUMBER(B1),LEN(B1)=6)

as for the other 2 I don't know, maybe someone else has some ideas.
Hope this helps!
JG


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