# Custom Integration: "Sync failed", but why?

**URL:** <https://community.fibery.io/t/custom-integration-sync-failed-but-why/4502>\
**Category:** Get Help\
**Created:** [May 24, 2023, 8:32pm UTC](https://community.fibery.io/t/custom-integration-sync-failed-but-why/4502 "2023-05-24T20:32:00Z")\
**Posts on this page:** 3\
**Page:** 3

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**Author:** ![Evgeni\_Kisel](https://sea2.discourse-cdn.com/flex020/user_avatar/community.fibery.io/evgeni_kisel/32/13938_2.png) [@Evgeni\_Kisel](https://community.fibery.io/u/Evgeni_Kisel)\
**Post date:** [June 27, 2023, 4:46am UTC](https://community.fibery.io/t/custom-integration-sync-failed-but-why/4502/42 "2023-06-27T04:46:32Z")

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So, you have SO many outdated entities that synchronisation is unable to clean them up in timely manner (in 2-4h) as a result system think that it’s deadlocked and kill it.

Options:

- run sync multiple times
- if you don’t have any automations, links or anything else configured just **delete space** and create new synchronisation

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**Author:** ![Matt\_Blais](https://sea2.discourse-cdn.com/flex020/user_avatar/community.fibery.io/matt_blais/32/1464_2.png) [@Matt\_Blais](https://community.fibery.io/u/Matt_Blais)\
**Post date:** [June 27, 2023, 7:04pm UTC](https://community.fibery.io/t/custom-integration-sync-failed-but-why/4502/43 "2023-06-27T19:04:45Z")

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Probably related – I also can’t delete these Spaces with many entities (still unresolved)

![image](https://us1.discourse-cdn.com/flex020/uploads/fibery/original/2X/d/de65611e602b9aef5aa9ce79a2c8a6e849c1e076.png)

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<div class="post-metadata">

**Author:** ![Andray\_Shotkin](https://sea2.discourse-cdn.com/flex020/user_avatar/community.fibery.io/andray_shotkin/32/1531_2.png) [@Andray\_Shotkin](https://community.fibery.io/u/Andray_Shotkin)\
**Post date:** [June 28, 2023, 10:07am UTC](https://community.fibery.io/t/custom-integration-sync-failed-but-why/4502/44 "2023-06-28T10:07:08Z")

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I have to admit that i underestimated the complexity of the naive fix 😕  
so still trying to enumerate less “expensive” alternatives

i can delete not needed spaces manually if you allow  
will write you directly via Intercom

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