--- title: "What is \"error 400\"" description: An error 400 occurs when a request sent to the website server is incorrect or corrupt, and the server receiving the request can’t understand it. --- [Skip to content](https://knowledge.treeviewdesigns.co.uk/knowledge/error-400#main-content) ![Our Tree View Designs company logo](https://knowledge.treeviewdesigns.co.uk/hs-fs/hubfs/tvd-final-light-transparent.webp?width=300&height=48&name=tvd-final-light-transparent.webp) - [Submit a support request](https://knowledge.treeviewdesigns.co.uk/knowledge/how-do-i-contact-tree-view-designs-for-support) Open main navigation Close main navigation - [Submit a support request](https://knowledge.treeviewdesigns.co.uk/knowledge/how-do-i-contact-tree-view-designs-for-support) How can we help you? - There are no suggestions because the search field is empty. 1. [Knowledge Base](https://knowledge.treeviewdesigns.co.uk/knowledge?hsLang=en) 2. [Support](https://knowledge.treeviewdesigns.co.uk/knowledge/support?hsLang=en) 3. [Common Issues](https://knowledge.treeviewdesigns.co.uk/knowledge/support?hsLang=en#common-issues) # What is "error 400" ## An error 400 occurs when a request sent to the website server is incorrect or corrupt, and the server receiving the request can’t understand it. An error 400 occurs when a request sent to the website server is incorrect or corrupt, and the server receiving the request can’t understand it. 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