--- title: Avoid this App Crash Issue in a Production! 🚫 | daily.dev description: A production crash caused by duplicate keys in a Jetpack Compose lazy layout is examined, along with several solutions. When passing keys to a LazyColumn,... canonical: https://daily.dev/posts/avoid-this-app-crash-issue-in-a-production--bjjohldfe twitter:card: summary_large_image twitter:site: @dailydotdev og:type: website og:site_name: daily.dev og:title: Avoid this App Crash Issue in a Production! 🚫 | daily.dev og:description: A production crash caused by duplicate keys in a Jetpack Compose lazy layout is examined, along with several solutions. When passing keys to a LazyColumn,... og:url: https://daily.dev/posts/avoid-this-app-crash-issue-in-a-production--bjjohldfe og:image: https://api.daily.dev/og/posts/bJJohlDfE.png og:image:alt: Avoid this App Crash Issue in a Production! 🚫 og:image:width: 1200 og:image:height: 630 og:locale: en --- [Stevdza-San](https://daily.dev/sources/stevdzasan) [Watch video](https://api.daily.dev/r/bJJohlDfE) # [Avoid this App Crash Issue in a Production! 🚫](https://api.daily.dev/r/bJJohlDfE "Go to post") This title could be clearer and more informative. Try out Clickbait Shield for free (5 uses left this month). A production crash caused by duplicate keys in a Jetpack Compose lazy layout is examined, along with several solutions. When passing keys to a LazyColumn, duplicate values trigger an IllegalArgumentException. Fixes include composing unique keys from multiple fields (e.g., id + email), filtering duplicates with Kotlin's distinctBy, tracking and visually flagging duplicates in the UI, and converting the list to a map grouped by ID to handle duplicates gracefully without crashing. [#android](/tags/android "Check all #android posts")[#kotlin](/tags/kotlin "Check all #kotlin posts")[#jetpack-compose](/tags/jetpack-compose "Check all #jetpack-compose posts") Mar 22 • 5m watch time Comment Bookmark Copy Share your thoughts Post Share this post [](https://daily.dev/sources/stevdzasan) [Stevdza-San](https://daily.dev/sources/stevdzasan "https://daily.dev/sources/stevdzasan") 3 Followers • 8 Upvotes #### Would you recommend this post? 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