luvthavodka wrote:
How can I set the conditional formatting of a A1 if B1 or C1 shows #n/a?

(B1 and C1 both contain formulae that will return #n/a until the required
information is inputted elsewhere in the spreadsheet. Hence I want
conditional formatting to highlight information that is missing)

=IF(OR(ISNA(B1),ISNA(C1)),TRUE,FALSE) Will tell you what you want to
know.