# \#oc\_cards

**URL:** https://help.nextcloud.com/tag/oc-cards/329.md

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## [Contact synchronization suddenly stopped working with 500 error](https://help.nextcloud.com/t/contact-synchronization-suddenly-stopped-working-with-500-error/242694)

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**Author:** [@regs](https://help.nextcloud.com/u/regs)\
**Replies:** 5\
**Last updated:** [April 8, 2026, 2:00pm UTC](https://help.nextcloud.com/t/contact-synchronization-suddenly-stopped-working-with-500-error/242694 "2026-04-08T14:00:27Z")

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Started happening today just out of sudden. ed: seem like started happening when i added email to the contact Logs says OC\\DB\\Exceptions\\DbalException An exception occurred while executing a query: SQLSTATE\[23505\]: U…

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## [Nexcloud Adressbuch: Kein bearbeiten oder neue Einträge mehr möglich](https://help.nextcloud.com/t/nexcloud-adressbuch-kein-bearbeiten-oder-neue-eintrage-mehr-moglich/242605)

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**Author:** [@JanNi](https://help.nextcloud.com/u/JanNi)\
**Replies:** 6\
**Last updated:** [March 31, 2026, 11:44am UTC](https://help.nextcloud.com/t/nexcloud-adressbuch-kein-bearbeiten-oder-neue-eintrage-mehr-moglich/242605 "2026-03-31T11:44:05Z")

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Problemstellung: Sehr geehrte Forengemeinde. Ich suche Hilfe beim Beheben eines Nextcloud-Fehler. In Nextcloud kann ich keine Adressen im Adressbuch anlegen oder ändern. Ich erhalte in der Weboberfläche ein Popup beim s…

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## [Wrong Federated-Cloud-ID in cards (contacts)](https://help.nextcloud.com/t/wrong-federated-cloud-id-in-cards-contacts/175764)

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**Author:** [@guckuck](https://help.nextcloud.com/u/guckuck)\
**Replies:** 0\
**Last updated:** [December 4, 2023, 5:06pm UTC](https://help.nextcloud.com/t/wrong-federated-cloud-id-in-cards-contacts/175764 "2023-12-04T17:06:25Z")

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Nextcloud version: 27.1.4 Operating system and version (eg, Ubuntu 20.04): Linux 5.4.0-104-generic x86\_64 Apache or nginx version: nginx PHP version: 8.2.13 The issue you are facing: I changed the domain for my nex…

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## [\[SOLVED\] Truncate \`oc\_cards\` for specific user?](https://help.nextcloud.com/t/solved-truncate-oc-cards-for-specific-user/151324)

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**Author:** [@enoch85](https://help.nextcloud.com/u/enoch85)\
**Replies:** 6\
**Last updated:** [December 6, 2022, 8:23pm UTC](https://help.nextcloud.com/t/solved-truncate-oc-cards-for-specific-user/151324 "2022-12-06T20:23:13Z")

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I’ve had issues with Davx5 syncing for 1 year now, and I’ve finally decided to fix it. Question is can you truncate data for a specific user - or do you have to truncate the whole table (oc\_cards and recreate it from scr…