Hmmm, not sure it would be possible. The table is already very wide. Is it possible to click on a conditional format rule and ask them to identify the cells? If so, I could do this for a couple of rules.

Another idea. Number all the issues. For all conditional rules found in a row, have the number of the issue written at the end of the report. For example, rule 3, 7 and 12 apply. These numbers would be entered in column AM, AN and AO. What do you think?

The columns don't need to be wide if we make one for each code. Just wide enough to fit a single character.

Alternatively, we could make it one column and have an equation enter a code for each error encountered. Thus the cell error codes might look like "999L01 99P02 CNH CONV" or "1 3 6 12" or however you might like to code your errors.

Also, we could make an entirely new tab for the errors.

Precisely how I described one solution above. Great minds think alike. Fortunately, so do we. ;-)