I am currently working on the following Excel workbook, which will be used to record test cases:

If the user enters in felcolumn F, he will paint it. felmeans fault"(in Swedish), so I want to get the tester to register this error in the error tracking system whenever one of the test cases fails. In the column I have to indicate which identifier of this error in the error tracking system. So what I'm trying to achieve :
fel F, , I. , I- , F- fel, , - I, .
, :
=IF(AND(F5="Fel",I5=ISEMPTY(TRUE)),)
, . , , .
, , , , - I