--- title: "Changes to Link or unlink an external issue to/from a task" method: POST path: "/tasks/{id}/external-issues" --- # Changes to Link or unlink an external issue to/from a task `POST /tasks/{id}/external-issues` > Every recorded change to this operation, newest first. ## Timeline Changed in 9 of 63 revisions. - **2026-10-31** `05e40342a893`: 2 info - **2026-10-27** `554844ef05a1`: 3 info - **2026-10-12** `40bf3229d58f`: 1 info - **2026-10-11** `dfb481067e5a`: 3 breaking, 105 info - **2026-09-12** `e85c0a2a3253`: 4 info - **2026-09-11** `bf4b8e50f9ee`: 1 info - **2026-08-28** `fe3adb90ea45`: 1 info - **2026-08-20** `a7231589e927`: 1 info - **2026-08-15** `cfd9e65e79bb`: 1 info ## Changes - **2026-10-31** `05e40342a893`: 2 info - added the optional property `data/external_issues/items/key` to the response with the `200` status - added the optional property `data/external_issues/items/state` to the response with the `200` status - **2026-10-27** `554844ef05a1`: 3 info - added the optional property `data/blocked_by_task_ids` to the response with the `200` status - added the optional property `data/blocks_task_ids` to the response with the `200` status - added the required property `data/ai_instructions` to the response with the `200` status - **2026-10-12** `40bf3229d58f`: 1 info - the response property `data` became required for the status `200` - **2026-10-11** `dfb481067e5a`: 3 breaking, 105 info - the response property `data/account/external_ids` became nullable for the status `200` - the response property `data/custom_fields` became nullable for the status `200` - the response property `data/subtask_ids` became nullable for the status `200` - added the non-success response with the status `401` - added the non-success response with the status `429` - the response property `data/account/id` became required for the status `200` - the response property `data/assignee/contact/id` became required for the status `200` - the response property `data/assignee/user/id` became required for the status `200` - the response property `data/body_html` became required for the status `200` - the response property `data/created_at` became required for the status `200` - the response property `data/customer_portal_visible` became required for the status `200` - the response property `data/external_issues/items/external_id` became required for the status `200` - the response property `data/external_issues/items/link` became required for the status `200` - the response property `data/external_issues/items/source` became required for the status `200` - the response property `data/id` became required for the status `200` - the response property `data/linked_issues/items/id` became required for the status `200` - the response property `data/linked_issues/items/number` became required for the status `200` - the response property `data/linked_issues/items/title` became required for the status `200` - the response property `data/milestone/id` became required for the status `200` - the response property `data/project/id` became required for the status `200` - the response property `data/status` became required for the status `200` - the response property `data/title` became required for the status `200` - the response property `data/updated_at` became required for the status `200` - the response property `request_id` became required for the status `200` - the response property `request_id` became required for the status `400` - the response property `request_id` became required for the status `403` - the response property `request_id` became required for the status `404` - the response property `request_id` became required for the status `500` - removed the `duplicate_object` enum value from the `code` response property for the response status `400` - removed the `duplicate_object` enum value from the `code` response property for the response status `403` - removed the `duplicate_object` enum value from the `code` response property for the response status `404` - removed the `duplicate_object` enum value from the `code` response property for the response status `500` - removed the `email_bounced` enum value from the `code` response property for the response status `400` - removed the `email_bounced` enum value from the `code` response property for the response status `403` - removed the `email_bounced` enum value from the `code` response property for the response status `404` - removed the `email_bounced` enum value from the `code` response property for the response status `500` - removed the `internal_error` enum value from the `code` response property for the response status `400` - removed the `internal_error` enum value from the `code` response property for the response status `403` - removed the `internal_error` enum value from the `code` response property for the response status `404` - removed the `internal_error` enum value from the `code` response property for the response status `500` - …68 more - **2026-09-12** `e85c0a2a3253`: 4 info - added the optional property `code` to the response with the `400` status - added the optional property `code` to the response with the `403` status - added the optional property `code` to the response with the `404` status - added the optional property `code` to the response with the `500` status - **2026-09-11** `bf4b8e50f9ee`: 1 info - added the optional property `data/completed_at` to the response with the `200` status - **2026-08-28** `fe3adb90ea45`: 1 info - added the non-success response with the status `403` - **2026-08-20** `a7231589e927`: 1 info - added the optional property `data/linked_issues` to the response with the `200` status - **2026-08-15** `cfd9e65e79bb`: 1 info - endpoint added --- [Operation](https://skmtc.dev/usepylon/apis/pylon-api/docs/tasks/:id/external-issues/post.md) - [API](https://skmtc.dev/usepylon/apis/pylon-api.md) - [Page](https://skmtc.dev/usepylon/apis/pylon-api/changes/tasks/:id/external-issues/post)