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Neil KimNeil Kim 

Custom Popup for Error Message in LEX

Hi experts,

Now, I'd like to pop up error message in LEX with super simple text.
However, want to show message with Full-Lightning-Native component.

How can I make this Process?
If you know any article or post about this approach, please share with me.

Thanks in advance
SandhyaSandhya (Salesforce Developers) 

You may refer below blog.
Please mark it as solved if my reply was helpful. It will make it available for other as the proper solution.
Best Regards