Conditional Formating Error Message

[AVDPDHL]

I have drop-down list in H4 (A, B, C, D, E). I want an error message when H4 has C, D, or E and I4 is empty (do not contain an email address). Many Thanks I am stuck on this for a long time. !!

[ChemistB]

Since you are already using Data Validation to create the dropdown list (I assume), you can use conditional formatting to change the background color to red (for example) when that condition is met. Otherwise, I think you'll need to resort to VBA.
=AND(OR(H4="C", H4="D", H4="E"), LEN($I4)<1)
Would that work for you?

[AVDPDHL]

Since you are already using Data Validation to create the dropdown list (I assume), you can use conditional formatting to change the background color to red (for example) when that condition is met. Otherwise, I think you'll need to resort to VBA.
=AND(OR(H4="C", H4="D", H4="E"), LEN($I4)<1)
Would that work for you?

Thank you for your reply. I would prefer to give an error message. So there is no way I can have an error message and stop the user from proceeding ahead without entering email in I4? Conditional formating only fills the cell in red.

[ChemistB]

I believe you'll need to use an event driven VBA. Is that okay with you?

[AVDPDHL]

Sorry I have no experience with VBA. How long will it take to learn this? I have to send across this template to other departments to fill and send back !

[ChemistB]

I can write the VBA. are we just talking about H4 or is it H4:H100?

[AVDPDHL]

Thank you very much. Actually it is N4 to N166 and I want the error message "Please enter email address" for not filling corresponding cell in column O. And the same relationship applies for P & Q, R & S, T & U, V & W, X & Y, Z & AA, AB & AC, AD & AE. Thank you, you are a life saver.

[ChemistB]

Okay, try this.
Right click on the sheet tab where all this is happening. Then "View code"
Paste this code into the window that opens up (VBA Editor) text box on the right of screen

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See if it works

[AVDPDHL]

Works great ChemistB. Thank you million times. Cheers

[arlu1201]

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