--- title: How to fix errors when creating a new last-minute appointment description: Support --- [Skip to content](https://helpdesk.turnup.world/en/practice/how-to-fix-errors-when-creating-a-new-last-minute-appointment#main-content) - [English](https://helpdesk.turnup.world/en/practice/how-to-fix-errors-when-creating-a-new-last-minute-appointment) - [Français](https://helpdesk.turnup.world/fr/cabinet/comment-résoudre-les-erreurs-lors-de-la-création-dun-nouveau-rendez-vous-last-minute) - [Nederlands](https://helpdesk.turnup.world/nl/praktijk/zo-los-je-fouten-op-bij-het-aanmaken-van-een-nieuwe-last-minute-afspraak) English Show submenu for translations [![MicrosoftTeams-image (28).png\]](https://helpdesk.turnup.world/hs-fs/hubfs/MicrosoftTeams-image%20(28).png?width=85&height=85&name=MicrosoftTeams-image%20(28).png)](https://app.turnup.be) Open main navigation Close main navigation - - [English](https://helpdesk.turnup.world/en/practice/how-to-fix-errors-when-creating-a-new-last-minute-appointment) - [Français](https://helpdesk.turnup.world/fr/cabinet/comment-résoudre-les-erreurs-lors-de-la-création-dun-nouveau-rendez-vous-last-minute) - [Nederlands](https://helpdesk.turnup.world/nl/praktijk/zo-los-je-fouten-op-bij-het-aanmaken-van-een-nieuwe-last-minute-afspraak) English Show submenu for translations - [Ga terug naar TurnUp](https://app.turnup.be/) [Ga terug naar TurnUp](https://app.turnup.be/) Looking for help? Choose a category below or use the search bar. - There are no suggestions because the search field is empty. 1. [Practice Helpdesk](https://helpdesk.turnup.world/en/practice?hsLang=en) 2. [Last-minute appointments](https://helpdesk.turnup.world/en/practice/last-minute-appointments?hsLang=en) August 27, 2025 # How to fix errors when creating a new last-minute appointment ## When you create a last-minute that is not processed correctly, there may be several possible causes and solutions. In this article, we explain what you can do. #### 1. You receive an error message by email If an error occurs while creating a last-minute, you will automatically receive an email from TurnUp explaining the issue. Please read this carefully: it often contains both the cause and the solution. #### 2. No error message received? Check if the last-minute appointment was actually created in the TurnUp application: - Can’t find the appointment? Then check that: - The practitioner, treatment, and duration are correctly filled in. - The agenda matches the one defined in the practice settings. Still errors? It may be that the connection with the scheduling system (e.g. DentAdmin) was temporarily interrupted. #### 3. Possible cause: update in DentAdmin Sometimes an update in DentAdmin changes the **communication matrices** (the mapping of treatments between systems). This may block the creation of a last-minute. **Solution:** Contact the TurnUp support team to check. The matrices may need to be re-imported or updated. #### 4. 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