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---
stage: Plan
group: Product Planning
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
---
# Linked epics API **(ULTIMATE)**
> - [Introduced](https://gitlab.com/gitlab-org/gitlab/-/issues/352493) in GitLab 14.9 [with a flag](../administration/feature_flags.md) named `related_epics_widget`. Enabled by default.
> - [Feature flag `related_epics_widget`](https://gitlab.com/gitlab-org/gitlab/-/issues/357089) removed in GitLab 15.0.
If the Related Epics feature is not available in your GitLab plan, a `403` status code is returned.
## List linked epics
Get a list of a given epic's linked epics filtered according to the user authorizations.
```plaintext
GET /groups/:id/epics/:epic_iid/related_epics
```
Supported attributes:
| Attribute | Type | Required | Description |
| ---------- | -------------- | ---------------------- | ------------------------------------------------------------------------- |
| `epic_iid` | integer | **{check-circle}** Yes | Internal ID of a group's epic |
| `id` | integer/string | **{check-circle}** Yes | ID or [URL-encoded path of the group](index.md#namespaced-path-encoding). |
Example request:
```shell
curl --header "PRIVATE-TOKEN: <your_access_token>" "https://gitlab.example.com/api/v4/groups/:id/epics/:epic_iid/related_epics"
```
Example response:
```json
[
{
"id":2,
"iid":2,
"color":"#1068bf",
"text_color":"#FFFFFF",
"group_id":2,
"parent_id":null,
"parent_iid":null,
"title":"My title 2",
"description":null,
"confidential":false,
"author":{
"id":3,
"username":"user3",
"name":"Sidney Jones4",
"state":"active",
"avatar_url":"https://www.gravatar.com/avatar/82797019f038ab535a84c6591e7bc936?s=80u0026d=identicon",
"web_url":"http://localhost/user3"
},
"start_date":null,
"end_date":null,
"due_date":null,
"state":"opened",
"web_url":"http://localhost/groups/group1/-/epics/2",
"references":{
"short":"u00262",
"relative":"u00262",
"full":"group1u00262"
},
"created_at":"2022-03-10T18:35:24.479Z",
"updated_at":"2022-03-10T18:35:24.479Z",
"closed_at":null,
"labels":[
],
"upvotes":0,
"downvotes":0,
"_links":{
"self":"http://localhost/api/v4/groups/2/epics/2",
"epic_issues":"http://localhost/api/v4/groups/2/epics/2/issues",
"group":"http://localhost/api/v4/groups/2",
"parent":null
},
"related_epic_link_id":1,
"link_type":"relates_to",
"link_created_at":"2022-03-10T18:35:24.496+00:00",
"link_updated_at":"2022-03-10T18:35:24.496+00:00"
}
]
```
## Create a related epic link
> - [Introduced](https://gitlab.com/gitlab-org/gitlab/-/issues/352840) in GitLab 14.10.
> - Minimum required role for the group [changed](https://gitlab.com/gitlab-org/gitlab/-/issues/381308) from Reporter to Guest in GitLab 15.8.
Create a two-way relation between two epics. The user must have at least the Guest role for both groups.
```plaintext
POST /groups/:id/epics/:epic_iid/related_epics
```
Supported attributes:
| Attribute | Type | Required | Description |
|---------------------|----------------|-----------------------------|---------------------------------------|
| `epic_iid` | integer | **{check-circle}** Yes | Internal ID of a group's epic. |
| `id` | integer/string | **{check-circle}** Yes | ID or [URL-encoded path of the group](index.md#namespaced-path-encoding) owned by the authenticated user. |
| `target_epic_iid` | integer/string | **{check-circle}** Yes | Internal ID of a target group's epic. |
| `target_group_id` | integer/string | **{check-circle}** Yes | ID or [URL-encoded path of the target group](index.md#namespaced-path-encoding). |
| `link_type` | string | **{dotted-circle}** No | Type of the relation (`relates_to`, `blocks`, `is_blocked_by`), defaults to `relates_to`. |
Example request:
```shell
curl --request POST --header "PRIVATE-TOKEN: <your_access_token>" "https://gitlab.example.com/api/v4/groups/26/epics/1/related_epics?target_group_id=26&target_epic_iid=5"
```
Example response:
```json
{
"source_epic": {
"id": 21,
"iid": 1,
"color": "#1068bf",
"text_color": "#FFFFFF",
"group_id": 26,
"parent_id": null,
"parent_iid": null,
"title": "Aspernatur recusandae distinctio omnis et qui est iste.",
"description": "some description",
"confidential": false,
"author": {
"id": 15,
"username": "trina",
"name": "Theresia Robel",
"state": "active",
"avatar_url": "https://www.gravatar.com/avatar/085e28df717e16484cbf6ceca75e9a93?s=80&d=identicon",
"web_url": "http://gitlab.example.com/trina"
},
"start_date": null,
"end_date": null,
"due_date": null,
"state": "opened",
"web_url": "http://gitlab.example.com/groups/flightjs/-/epics/1",
"references": {
"short": "&1",
"relative": "&1",
"full": "flightjs&1"
},
"created_at": "2022-01-31T15:10:44.988Z",
"updated_at": "2022-03-16T09:32:35.712Z",
"closed_at": null,
"labels": [],
"upvotes": 0,
"downvotes": 0,
"_links": {
"self": "http://gitlab.example.com/api/v4/groups/26/epics/1",
"epic_issues": "http://gitlab.example.com/api/v4/groups/26/epics/1/issues",
"group": "http://gitlab.example.com/api/v4/groups/26",
"parent": null
}
},
"target_epic": {
"id": 25,
"iid": 5,
"color": "#1068bf",
"text_color": "#FFFFFF",
"group_id": 26,
"parent_id": null,
"parent_iid": null,
"title": "Aut assumenda id nihil distinctio fugiat vel numquam est.",
"description": "some description",
"confidential": false,
"author": {
"id": 3,
"username": "valerie",
"name": "Erika Wolf",
"state": "active",
"avatar_url": "https://www.gravatar.com/avatar/9ef7666abb101418a4716a8ed4dded80?s=80&d=identicon",
"web_url": "http://gitlab.example.com/valerie"
},
"start_date": null,
"end_date": null,
"due_date": null,
"state": "opened",
"web_url": "http://gitlab.example.com/groups/flightjs/-/epics/5",
"references": {
"short": "&5",
"relative": "&5",
"full": "flightjs&5"
},
"created_at": "2022-01-31T15:10:45.080Z",
"updated_at": "2022-03-16T09:32:35.842Z",
"closed_at": null,
"labels": [],
"upvotes": 0,
"downvotes": 0,
"_links": {
"self": "http://gitlab.example.com/api/v4/groups/26/epics/5",
"epic_issues": "http://gitlab.example.com/api/v4/groups/26/epics/5/issues",
"group": "http://gitlab.example.com/api/v4/groups/26",
"parent": null
}
},
"link_type": "relates_to"
}
```
## Delete a related epic link
> - [Introduced](https://gitlab.com/gitlab-org/gitlab/-/issues/352840) in GitLab 14.10.
> - Minimum required role for the group [changed](https://gitlab.com/gitlab-org/gitlab/-/issues/381308) from Reporter to Guest in GitLab 15.8.
Delete a two-way relation between two epics. The user must have at least the Guest role for both groups.
```plaintext
DELETE /groups/:id/epics/:epic_iid/related_epics/:related_epic_link_id
```
Supported attributes:
| Attribute | Type | Required | Description |
|--------------------------|----------------|-----------------------------|---------------------------------------|
| `epic_iid` | integer | **{check-circle}** Yes | Internal ID of a group's epic. |
| `id` | integer/string | **{check-circle}** Yes | ID or [URL-encoded path of the group](index.md#namespaced-path-encoding) owned by the authenticated user. |
| `related_epic_link_id` | integer/string | **{check-circle}** Yes | Internal ID of a related epic link. |
Example request:
```shell
curl --request DELETE --header "PRIVATE-TOKEN: <your_access_token>" "https://gitlab.example.com/api/v4/groups/26/epics/1/related_epics/1"
```
Example response:
```json
{
"source_epic": {
"id": 21,
"iid": 1,
"color": "#1068bf",
"text_color": "#FFFFFF",
"group_id": 26,
"parent_id": null,
"parent_iid": null,
"title": "Aspernatur recusandae distinctio omnis et qui est iste.",
"description": "some description",
"confidential": false,
"author": {
"id": 15,
"username": "trina",
"name": "Theresia Robel",
"state": "active",
"avatar_url": "https://www.gravatar.com/avatar/085e28df717e16484cbf6ceca75e9a93?s=80&d=identicon",
"web_url": "http://gitlab.example.com/trina"
},
"start_date": null,
"end_date": null,
"due_date": null,
"state": "opened",
"web_url": "http://gitlab.example.com/groups/flightjs/-/epics/1",
"references": {
"short": "&1",
"relative": "&1",
"full": "flightjs&1"
},
"created_at": "2022-01-31T15:10:44.988Z",
"updated_at": "2022-03-16T09:32:35.712Z",
"closed_at": null,
"labels": [],
"upvotes": 0,
"downvotes": 0,
"_links": {
"self": "http://gitlab.example.com/api/v4/groups/26/epics/1",
"epic_issues": "http://gitlab.example.com/api/v4/groups/26/epics/1/issues",
"group": "http://gitlab.example.com/api/v4/groups/26",
"parent": null
}
},
"target_epic": {
"id": 25,
"iid": 5,
"color": "#1068bf",
"text_color": "#FFFFFF",
"group_id": 26,
"parent_id": null,
"parent_iid": null,
"title": "Aut assumenda id nihil distinctio fugiat vel numquam est.",
"description": "some description",
"confidential": false,
"author": {
"id": 3,
"username": "valerie",
"name": "Erika Wolf",
"state": "active",
"avatar_url": "https://www.gravatar.com/avatar/9ef7666abb101418a4716a8ed4dded80?s=80&d=identicon",
"web_url": "http://gitlab.example.com/valerie"
},
"start_date": null,
"end_date": null,
"due_date": null,
"state": "opened",
"web_url": "http://gitlab.example.com/groups/flightjs/-/epics/5",
"references": {
"short": "&5",
"relative": "&5",
"full": "flightjs&5"
},
"created_at": "2022-01-31T15:10:45.080Z",
"updated_at": "2022-03-16T09:32:35.842Z",
"closed_at": null,
"labels": [],
"upvotes": 0,
"downvotes": 0,
"_links": {
"self": "http://gitlab.example.com/api/v4/groups/26/epics/5",
"epic_issues": "http://gitlab.example.com/api/v4/groups/26/epics/5/issues",
"group": "http://gitlab.example.com/api/v4/groups/26",
"parent": null
}
},
"link_type": "relates_to"
}
```
|
