V4 API: Remove deprecated MR and Issue endpoints and preserve V3 namespace (!8967) · Merge requests · GitLab.org / GitLab FOSS · GitLab

GitLab 15.0 is launching on May 22! This version brings many exciting improvements, but also removes deprecated features and introduces breaking changes that may impact your workflow. To see what is being deprecated and removed, please visit Breaking changes in 15.0 and Deprecations.

Project 'gitlab-org/gitlab-ce' was moved to 'gitlab-org/gitlab-foss'. Please update any links and bookmarks that may still have the old path.

V4 API: Remove deprecated MR and Issue endpoints and preserve V3 namespace

Keep V3 API untouched while making the following changes for V4:

Remove iid filter on projects/x/issues
Rename iid filter on projects/x/merge_requests to iids
Remove projects/x/merge_request/y endpoint

EE Backport: gitlab-ee!1166

Changelog entry added
Documentation created/updated
API support added
Tests
- Added for this feature/bug
- All builds are passing
Conform by the merge request performance guides
Conform by the style guides
Branch has no merge conflicts with master (if it does - rebase it please)
Squashed related commits together

What are the relevant issue numbers?

Closes #27180 (closed) #25183 (closed)