1. link two tasks using "**Child"**

2. Begin of the insertionFrom the parent work package, Open the three dots menu in the top right corner and select "Duplicate"

3. In the work package create page, click "Save" button at the bottomEnd of the insertion Begin of the deletion duplicate any taskEnd of the deletion


**Actual Begin of the insertionresult:**End of the insertion Begin of the deletion result: an error appears**End of the deletion

Begin of the insertionThe work package create page is still displayed with the error: "_Manual scheduling cannot be set to false (automatically scheduled) as it has no predecessors or children._"

End of the insertion [21..11\_2025-11-21\_15.1.mp4](https://community.openproject.org/attachments/870533/21..11_2025-11-21_15.1.mp4)

Begin of the insertion**Expected result**

TheEnd of the insertion Begin of the deletion **expected result: theEnd of the deletion task is Begin of the insertionduplicated and picks manual scheduling automatically as it has no children.End of the insertion Begin of the deletion duplicated**End of the deletion

Begin of the insertion**Notes**End of the insertion Begin of the deletion <br>End of the deletion

Begin of the insertionWhen choosing &quot;Duplicate in another project&quot; (from three dots menu) or &quot;Bulk copy&quot; (from work packages list), the problem does not occur because the children are copied too.End of the insertion Begin of the deletion **What behavior should I expect?**End of the deletion

Begin of the insertionThe problem also occurs if the work package has predecessors: the relations are not copied when duplicating a work package and so the same error is displayed. They are copied only with &quot;Duplicate in another project&quot; or &quot;Bulk copy&quot;End of the insertion Begin of the deletion <br>End of the deletion

Begin of the insertion**Version**

OpenProject 16.6.4

End of the insertion **Browser**

* [x] Chrome
* Begin of the insertion[x]End of the insertion Begin of the deletion [ ]End of the deletion Firefox
* [ ] Safari
* [ ] Mobile Safari
* [ ] Other (please specify)

**Operating System**

* [x] Windows
* Begin of the insertion[x]End of the insertion Begin of the deletion [ ]End of the deletion Mac OS X
* [ ] Mobile iOS
* [ ] Mobile Android
* [ ] Linux (please specify distro)
* [ ] Chrome OS
* [ ] Other (please specify) Begin of the deletion

**Language**

_Please specify the browser language and the language of the OpenProject user for which the bug occurred._End of the deletion