Interactive Lessons

Dive into new analytics techniques with lessons that incorporate videos, hands-on activities and quizzes to assess your knowledge.
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Customizing Error Messages

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Lesson Objective: Learn to test a user's app entries and send a custom error message when an invalid entry is used.

Estimated Time: ~7 Minutes


  • Test a user's entry in an app interface element with an expression
  • Customize an error message to relay to the end user if an invalid entry in the app interface is used
  • Challenge yourself with a quiz!

Recommended Follow-Up Training: Using List Boxes, Entering Free-Form Text