Automatically Highlight value in Other Column if it is not existing values of Column A

[Samael2021]

Let me know about conditional formatting or formula about auto highlighting. I have fixed values in Column A. If other cell values in Col B, C, D are not contained in the values of Col A, I want to highlight them automatically as soon as I type this values. Could you please help me. Thanks you so much. Let me provide a photo for significant view.

 

[Fluff]

How about

++Fluff.xlsm
	A	B	C	D
1	a	k	d	r
2	b	c	e	s
3	c	h	m	t
4	d	a	j	g
5	e
6	f
7	g
8
9
10
11
12
Data

Cells with Conditional Formatting
Cell	Condition		Cell Format	Stop If True
B1:D100	Expression	=AND(B1<>"",COUNTIFS($A$1:$A$7,B1)=0)	text	NO

 

[Samael2021]

How about

++Fluff.xlsm
	A	B	C	D
1	a	k	d	r
2	b	c	e	s
3	c	h	m	t
4	d	a	j	g
5	e
6	f
7	g
8
9
10
11
12
Data

Cells with Conditional Formatting
Cell	Condition		Cell Format	Stop If True
B1:D100	Expression	=AND(B1<>"",COUNTIFS($A$1:$A$7,B1)=0)	text	NO

Thanks you so much for your help. It is really what I need. Thank a lot.

 

[Fluff]

You're welcome & thanks for the feedback.