info: To determine the technical writer assigned to the Stage/Group associated with this page, see https://about.gitlab.com/handbook/product/ux/technical-writing/#assignments
> - [Replaced](https://gitlab.com/groups/gitlab-org/-/epics/5237) by merge request violations in GitLab 14.6 [with a flag](../../../administration/feature_flags.md) named `compliance_violations_report`. Disabled by default.
> - GraphQL API [introduced](https://gitlab.com/groups/gitlab-org/-/epics/7222) in GitLab 14.9.
> - [Generally available](https://gitlab.com/groups/gitlab-org/-/epics/5237) in GitLab 14.10. [Feature flag `compliance_violations_report`](https://gitlab.com/gitlab-org/gitlab/-/issues/346266) removed.
| Author approved merge request | High | [Separation of duties](#separation-of-duties) | The author of the merge request approved their own merge request. For more information, see [Prevent approval by author](../../project/merge_requests/approvals/settings.md#prevent-approval-by-author). | [Available in GitLab 14.10](https://gitlab.com/groups/gitlab-org/-/epics/6870) |
| Committers approved merge request | High | [Separation of duties](#separation-of-duties) | The committers of the merge request approved the merge request they contributed to. For more information, see [Prevent approvals by users who add commits](../../project/merge_requests/approvals/settings.md#prevent-approvals-by-users-who-add-commits). | [Available in GitLab 14.10](https://gitlab.com/groups/gitlab-org/-/epics/6870) |
| Fewer than two approvals | High | [Separation of duties](#separation-of-duties) | The merge request was merged with fewer than two approvals. For more information, see [Merge request approval rules](../../project/merge_requests/approvals/rules.md). | [Available in GitLab 14.10](https://gitlab.com/groups/gitlab-org/-/epics/6870) |
| Pipeline failed | Medium | [Pipeline results](../../../ci/pipelines/index.md) | The merge requests pipeline failed and was merged. | [Unavailable](https://gitlab.com/gitlab-org/gitlab/-/issues/346011) |
| Pipeline passed with warnings | Info | [Pipeline results](../../../ci/pipelines/index.md) | The merge request pipeline passed with warnings and was merged. | [Unavailable](https://gitlab.com/gitlab-org/gitlab/-/issues/346011) |
| Code coverage down more than 10% | High | [Code coverage](../../../ci/pipelines/settings.md#merge-request-test-coverage-results) | The code coverage report for the merge request indicates a reduction in coverage of more than 10%. | [Unavailable](https://gitlab.com/gitlab-org/gitlab/-/issues/346011) |
| Code coverage down between 5% to 10% | Medium | [Code coverage](../../../ci/pipelines/settings.md#merge-request-test-coverage-results) | The code coverage report for the merge request indicates a reduction in coverage of between 5% to 10%. | [Unavailable](https://gitlab.com/gitlab-org/gitlab/-/issues/346011) |
| Code coverage down between 1% to 5% | Low | [Code coverage](../../../ci/pipelines/settings.md#merge-request-test-coverage-results) | The code coverage report for the merge request indicates a reduction in coverage of between 1% to 5%. | [Unavailable](https://gitlab.com/gitlab-org/gitlab/-/issues/346011) |
| Code coverage down less than 1% | Info | [Code coverage](../../../ci/pipelines/settings.md#merge-request-test-coverage-results) | The code coverage report for the merge request indicates a reduction in coverage of less than 1%. | [Unavailable](https://gitlab.com/gitlab-org/gitlab/-/issues/346011) |
We support a separation of duties policy between users who create and approve merge requests.
Our criteria for the separation of duties is as follows:
- [A merge request author is **not** allowed to approve their merge request](../../project/merge_requests/approvals/settings.md#prevent-approval-by-author)
- [A merge request committer is **not** allowed to approve a merge request they have added commits to](../../project/merge_requests/approvals/settings.md#prevent-approvals-by-users-who-add-commits)
- [The minimum number of approvals required to merge a merge request is **at least** two](../../project/merge_requests/approvals/rules.md)
> - [Introduced](https://gitlab.com/gitlab-org/gitlab/-/issues/213364) in GitLab 13.3.
> - Chain of Custody reports sent using email [introduced](https://gitlab.com/gitlab-org/gitlab/-/issues/342594) in GitLab 15.3 with a flag named `async_chain_of_custody_report`. Disabled by default.
> - Chain of Custody report includes all commits (instead of just merge commits) [introduced](https://gitlab.com/gitlab-org/gitlab/-/issues/267601) in GitLab 15.9 with a flag named `all_commits_compliance_report`. Disabled by default.
FLAG:
On self-managed GitLab, by default the Chain of Custody report only contains information on merge commits. To make the report contain information on all commits to projects within a group, ask an administrator to [enable the feature flag](../../../administration/feature_flags.md) named `all_commits_compliance_report`. On GitLab.com, this feature is not available.
With the `all_commits_compliance_report` flag enabled, the Chain of Custody report provides a 1 month trailing window of any commit into a project under the group.
To generate the report for all commits, GitLab:
1. Fetches all projects under the group.
1. For each project, fetches the last 1 month of commits. Each project is capped at 1024 commits. If there are more than 1024 commits in the 1-month window, they
are truncated.
1. Writes the commits to a CSV file. The file is truncated at 15 MB because the report is emailed as an attachment.
The expanded report includes the commit SHA, commit author, committer, date committed, the group, and the project.
If the commit has a related merge commit, then the following are also included:
- Using a direct link: `https://gitlab.com/groups/<group-name>/-/security/merge_commit_reports.csv?commit_sha={optional_commit_sha}`, passing in an optional value to the