# OpenProject Integration -  link on existing Project or work packages

**URL:** <https://help.nextcloud.com/t/openproject-integration-link-on-existing-project-or-work-packages/199193>\
**Category:** ℹ️ Support\
**Tags:** openproject\
**Created:** [July 28, 2024, 10:46pm UTC](https://help.nextcloud.com/t/openproject-integration-link-on-existing-project-or-work-packages/199193 "2024-07-28T22:46:09Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![Michal\_Soppe](https://help.nextcloud.com/user_avatar/help.nextcloud.com/michal_soppe/32/63651_2.png) [@Michal\_Soppe](https://help.nextcloud.com/u/Michal_Soppe)\
**Post date:** [July 28, 2024, 10:46pm UTC](https://help.nextcloud.com/t/openproject-integration-link-on-existing-project-or-work-packages/199193/1 "2024-07-28T22:46:09Z")

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Hi, I have a problem linking files in nextcloud to existing projects or work packages in OpenProject. Nextcloud doesn’t see them. Reverse sync works. Does anyone know where the problem is?

Log from nextcloud:

OpenProject API error : Client error: `POST https://openproject.zidlochovice.cz/api/v3/work_packages` resulted in a `422 Unprocessable Content` response: {“\_type”:“Error”,“errorIdentifier”:“urn:openproject-org:api:v3:errors:PropertyConstraintViolation”,“message”:"Projekt ne (truncated…)

 ![nextcloud](https://help.nextcloud.com/uploads/default/original/3X/0/8/08ab56747b90675a1e446a73040ef7630787e13b.jpeg)

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**Author:** ![wwe](https://help.nextcloud.com/user_avatar/help.nextcloud.com/wwe/32/72963_2.png) [@wwe](https://help.nextcloud.com/u/wwe)\
**Post date:** [January 16, 2025, 8:03am UTC](https://help.nextcloud.com/t/openproject-integration-link-on-existing-project-or-work-packages/199193/2 "2025-01-16T08:03:37Z")

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