--- title: ICS2 - Missing response in ICS2 description: What to do then ICS2 is not working --- [Skip to content](https://hub.emmasys.com/help-center/ics-2#main-content) English Show submenu for translations [Ask our support](https://hub.emmasys.com/help-center/kb-tickets/new?hsLang=en) ![emma logo santa hat (4)](https://hub.emmasys.com/hs-fs/hubfs/emma%20logo%20santa%20hat%20(4).png?width=300&height=100&name=emma%20logo%20santa%20hat%20(4).png) - [Help Center](https://hub.emmasys.com/help-center) - [Customer Portal](https://hub.emmasys.com/customer-portal) - [Website](https://emmasys.com/) - [Status Page](https://hub.emmasys.com/help-center/system-status) Open main navigation Close main navigation - [Help Center](https://hub.emmasys.com/help-center) - [Customer Portal](https://hub.emmasys.com/customer-portal) - [Website](https://emmasys.com/) - [Status Page](https://hub.emmasys.com/help-center/system-status) - English Show submenu for translations - [Ask our support](https://hub.emmasys.com/help-center/kb-tickets/new) - Contact us Contact us How can we help you? - There are no suggestions because the search field is empty. 1. [Help Center](https://hub.emmasys.com/help-center?hsLang=en) 2. [Emma CMS General](https://hub.emmasys.com/help-center/emma-cms-general?hsLang=en) 3. [ICS2](https://hub.emmasys.com/help-center/emma-cms-general?hsLang=en#ics2) December 19, 2024 # ICS2 - Missing response in ICS2 ## What to do then ICS2 is not working After submitting the ENS or arrival message and if a response is not received, it is crucial to follow the steps outlined below: **Wait for 30 Minutes:** - After 30 minutes, the Central Service Desk (CSD) should notify the National Service Desk (NSD) if there is a central system issue. The NSD will inform you if ICS2 is unavailable. Continue submitting messages as usual. **Do not:** - Resend the same messages multiple times. - Use the split consignment or re-entry indicators unnecessarily. - Attempt alternative or "creative" solutions. For more information please see: [ICS2 Library](https://circabc.europa.eu/ui/group/18fb5859-3970-4ac5-b30b-6604977a15a7/library/28211935-63f9-4934-ac3b-a64d961796f3?p=1&n=10&sort=modified_DESC&utm_medium=email&utm_source=Ungapped&utm_campaign=%C3%84r%20du%20redo%20f%C3%B6r%20det%20nya%20exportsystemet%3F)   Adding MRN If the ENS has been submitted but remains in status 3, it is important to contact the customs authorities to request a response, as referenced above. If customs confirms that the message has been received and a response has been sent but has not arrived, you can utilize the ADD MRN button. This action allows you to add the MRN, and the ENS will then progress to status 3D. 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