**As** a product owner
**I want to** group work packages into backlog buckets and prioritize them against each other
**so that** backlog grooming is possible even with a large set of work packages

**Acceptance criteria**

* Backlog buckets are lists of work packages.

* They have a user provided name.

* The "Sprint planning" view shows backlog buckets.

* The name and the number of work packages within the bucket are displayed.

* Users can sort the items in a backlog bucket via drag & drop and via menu entries.

* A work package can

* only be in a single backlog bucket at a time.

* cannot be in a backlog bucket and a sprint at the same time.

* cannot be in a backlog bucket and the "inbox" backlog bucket at the same time

* Users can move a work package into a backlog via a menu entry in

* Sprints

* "Inbox" backlog bucket

* Another backlog bucket

* The Begin of the deletion user can toggle between each bucket and the "Inbox"End of the deletion backlog Begin of the insertionbucketsEnd of the insertion Begin of the deletion bucket (###72198) using a select.

* The version based backlogsEnd of the deletion are Begin of the insertionorderedEnd of the insertion Begin of the deletion completely replacedEnd of the deletion by Begin of the insertionname (asc).End of the insertion Begin of the deletion this feature

* End of the deletion The Begin of the insertion"Inbox" backlogEnd of the insertion Begin of the deletion setting "Column in backlogs"End of the deletion is Begin of the insertionalways displayed atEnd of the insertion Begin of the deletion removed inEnd of the deletion the Begin of the insertiontop.

End of the insertion Begin of the deletion version administration (###72800)

End of the deletion * A backlog bucket can be created on the view via the "+ Backlog bucket" on the page.

* Clicking on the button opens a modal in which the name can be Begin of the insertioninsertedEnd of the insertion Begin of the deletion selectedEnd of the deletion

* Backlog buckets can be deleted via a menu entry in the bucket menu

* Buckets can be renamed via a menu entry in the bucket menu

* A modal opens in which the user inserts the new name.

* Buckets are only present within the project in which they were created. There is no sharing of them for now. Begin of the deletion

* The backlog bucket a work package is in is visible on the work package itself. You can edit it within the work package.End of the deletion


**Technical notes**

* Begin of the insertionSince this is a larger topic that could potentially be split into smaller chunks, it probably makes sense to develop it behind a feature flag.End of the insertion Begin of the deletion <br>End of the deletion


**Permissions and visibility considerations**

* Creation/Deletion of buckets requires the `create_sprints` permission

* Moving a work package into/out of a bucket requires the `manage_sprint_items` permission


**Translation considerations**

* _Key terms and phrases in the key languages_


**Out of scope**

* The backlog Begin of the insertionbucket a work package is in, is not visible on the work package itself. To be changed in #73887

* The backlogEnd of the insertion property is for now not part of the work packages API. There is also no other API for the buckets for now. Begin of the insertionTo be changed in #73887End of the insertion

* For now, Begin of the insertionall backlogs are always displayed. This should laterEnd of the insertion Begin of the deletion it is not possible to display multiple backlog buckets at the same timeEnd of the deletion on Begin of the insertionbe replaced by a (multi-)select by whichEnd of the insertion the Begin of the insertionuser can toggle the visibility of the backlog buckets.End of the insertion Begin of the deletion &quot;Sprint planning&quot; page.End of the deletion

* Creation of work packages inside a backlog bucket is not yet possible (subject to change)