Highlight cells between columns if value does not match

[atisyam]

Hello. What I intended is for the cell in Column C to be highlighted if the value does not match with cell in Column D. The cells in both columns are not in the same row, so to know if it is matched is with respect to Column B and Column E. (i.e.C6 will be highlighted but C5 will not be highlighted)

[TABLE="class: grid, width: 500"]
<tbody>[TR]
[TD]1[/TD]
[TD]B[/TD]
[TD]C[/TD]
[TD]D[/TD]
[TD]E[/TD]
[/TR]
[TR]
[TD]2[/TD]
[TD]Equipment No.[/TD]
[TD]Old ID number[/TD]
[TD]New Id Number[/TD]
[TD]Location Tag[/TD]
[/TR]
[TR]
[TD]3[/TD]
[TD]A5427H[/TD]
[TD]-[/TD]
[TD]2001[/TD]
[TD]Side[/TD]
[/TR]
[TR]
[TD]4[/TD]
[TD]A5427H[/TD]
[TD]-[/TD]
[TD]2002[/TD]
[TD]Back[/TD]
[/TR]
[TR]
[TD]5[/TD]
[TD]A5427H[/TD]
[TD]2001[/TD]
[TD][/TD]
[TD]Side[/TD]
[/TR]
[TR]
[TD]6[/TD]
[TD]A5427H[/TD]
[TD]2003[/TD]
[TD][/TD]
[TD]Back[/TD]
[/TR]
</tbody>[/TABLE]


This is a continuation from the thread: https://www.excelforum.com/excel-ge...based-on-criterias-from-different-column.html

So as the value in column C will be auto-matched with Column D, whenever the user changes the value, the value does not match. So I would like this cell to be highlighted only after the user has entered the value. I am not good with excel and I have tried these formulas inside conditional formatting:

=VLOOKUP($C1,$D1,3,FALSE) // nothing happened


=IF($C2=$D2,1,0) // all empty column got highlighted before user entered value. Even when value is correct, it still remains red

Hope that I could get some help for this. Thanks.

 

[atisyam]

The question can only be solved through VBA which is not per my intention.

 

[Marcelo Branco]

Select C3:C6

In Conditional Formatting try this formula
=AND(ISNUMBER($C3),COUNTIFS($B:$B,$B3,$D:$D,$C3)=0)
pick the format you want

Hope this helps.

M.