# Adding existing host to different inventory shows duplicates

**URL:** <https://forum.ansible.com/t/adding-existing-host-to-different-inventory-shows-duplicates/34778>\
**Category:** AWX Project\
**Created:** [March 13, 2021, 4:16pm UTC](https://forum.ansible.com/t/adding-existing-host-to-different-inventory-shows-duplicates/34778 "2021-03-13T16:16:30Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![Kumaresan\_M](https://avatars.discourse-cdn.com/v4/letter/k/e19b73/32.png) [@Kumaresan\_M](https://forum.ansible.com/u/Kumaresan_M)\
**Post date:** [March 13, 2021, 4:16pm UTC](https://forum.ansible.com/t/adding-existing-host-to-different-inventory-shows-duplicates/34778/1 "2021-03-13T16:16:30Z")

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Hi All,

I am trying to add existing host into different inventory shows duplicates in ansible tower.Does the host can’t be in two different inventory?

Call to /api/v2/hosts/. GET returned: 400 duplicate key value violates unique constraint “main\_activitystream\_host\_pkey” DETAIL: Key (id)=(183) already exists.

Regards  
Kumar