--- title: "Changes to Migration only: Import messages onto an existing issue" method: POST path: "/import/issues/{id}/messages" --- # Changes to Migration only: Import messages onto an existing issue `POST /import/issues/{id}/messages` > Every recorded change to this operation, newest first. ## Timeline Changed in 16 of 63 revisions. - **2026-10-31** `05e40342a893`: 2 info - **2026-10-21** `b64ce6c1bce3`: 1 info - **2026-10-15** `1ecc216f2835`: 14 info - **2026-10-12** `40bf3229d58f`: 1 info - **2026-10-11** `dfb481067e5a`: 19 breaking, 7 warning, 142 info - **2026-10-10** `363313492038`: 1 info - **2026-10-10** `363313492038`: 1 info - **2026-09-12** `e85c0a2a3253`: 4 info - **2026-09-10** `8a1a71062385`: 2 info - **2026-08-28** `fe3adb90ea45`: 1 info - **2026-08-27** `6a8e7fb2b6cd`: 1 warning - **2026-08-24** `cd41b0efe7d0`: 1 info - **2026-08-22** `d4db007b26b2`: 1 info - **2026-08-19** `601861c5dfcf`: 3 info - **2026-08-13** `8478697d50cb`: 1 warning - **2026-07-26** `3e347e631c35`: 3 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 - **2026-10-21** `b64ce6c1bce3`: 1 info - added the optional property `data/workspace_phone_number` to the response with the `200` status - **2026-10-15** `1ecc216f2835`: 14 info - added the optional property `data/first_response_assignee_id_at_breach` to the response with the `200` status - added the optional property `data/first_response_resolving_user_id` to the response with the `200` status - added the optional property `data/follow_up` to the response with the `200` status - added the optional property `data/next_reply` to the response with the `200` status - added the optional property `data/resolution_assignee_id_at_breach` to the response with the `200` status - added the optional property `data/resolution_resolving_user_id` to the response with the `200` status - added the optional property `data/team_slas/items/first_resolution/assignee_id_at_breach` to the response with the `200` status - added the optional property `data/team_slas/items/first_resolution/resolving_user_id` to the response with the `200` status - added the optional property `data/team_slas/items/first_response/assignee_id_at_breach` to the response with the `200` status - added the optional property `data/team_slas/items/first_response/resolving_user_id` to the response with the `200` status - added the optional property `data/team_slas/items/follow_up` to the response with the `200` status - added the optional property `data/team_slas/items/next_reply` to the response with the `200` status - added the optional property `data/team_slas/items/resolution/assignee_id_at_breach` to the response with the `200` status - added the optional property `data/team_slas/items/resolution/resolving_user_id` 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`: 19 breaking, 7 warning, 142 info - the `messages/items/created_at` request property format changed from no format to `date-time` - the response property `data/account` became nullable for the status `200` - the response property `data/assignee` became nullable for the status `200` - the response property `data/csat_responses/items/comment` became nullable for the status `200` - the response property `data/custom_fields` became nullable for the status `200` - the response property `data/first_resolution_time` became nullable for the status `200` - the response property `data/first_response_time` became nullable for the status `200` - the response property `data/latest_message_time` became nullable for the status `200` - the response property `data/requester` became nullable for the status `200` - the response property `data/resolution_time` became nullable for the status `200` - the response property `data/tags` became nullable for the status `200` - the response property `data/team` became nullable for the status `200` - the response property `data/team_slas/items/first_resolution/time` became nullable for the status `200` - the response property `data/team_slas/items/first_response/time` became nullable for the status `200` - the response property `data/team_slas/items/resolution/time` became nullable for the status `200` - the `data/account` response's property type changed from `object` to no type for status `200` - the `data/assignee` response's property type changed from `object` to no type for status `200` - the `data/requester` response's property type changed from `object` to no type for status `200` - the `data/team` response's property type changed from `object` to no type for status `200` - removed the optional property `data/account/external_ids` from the response with the `200` status - removed the optional property `data/account/id` from the response with the `200` status - removed the optional property `data/assignee/email` from the response with the `200` status - removed the optional property `data/assignee/id` from the response with the `200` status - removed the optional property `data/requester/email` from the response with the `200` status - removed the optional property `data/requester/id` from the response with the `200` status - removed the optional property `data/team/id` from the response with the `200` status - added the non-success response with the status `401` - added the non-success response with the status `429` - added `#/components/schemas/MiniAccount` to the `data/account` response property `allOf` list for the response status `200` - added `#/components/schemas/MiniContact` to the `data/requester` response property `allOf` list for the response status `200` - added `#/components/schemas/MiniTeam` to the `data/team` response property `allOf` list for the response status `200` - added `#/components/schemas/MiniUser` to the `data/assignee` response property `allOf` list for the response status `200` - the response property `data/active_time_by_user/items/active_time_seconds` became required for the status `200` - the response property `data/active_time_by_user/items/business_hours_active_time_seconds` became required for the status `200` - the response property `data/active_time_by_user/items/user_id` became required for the status `200` - the response property `data/body_html` became required for the status `200` - the response property `data/chat_widget_info/page_url` became required for the status `200` - the response property `data/child_issues/items/id` became required for the status `200` - the response property `data/child_issues/items/number` became required for the status `200` - the response property `data/child_issues/items/title` became required for the status `200` - …128 more - **2026-10-10** `363313492038`: 1 info - added the optional property `data/external_incidents` to the response with the `200` status - **2026-10-10** `363313492038`: 1 info - added the optional property `data/external_incidents` to the response with the `200` status - **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 - **2026-09-10** `8a1a71062385`: 2 info - added the optional property `data/first_resolution_time` to the response with the `200` status - added the optional property `data/team_slas/items/first_resolution` to the response with the `200` status - **2026-08-28** `fe3adb90ea45`: 1 info - added the non-success response with the status `403` - **2026-08-27** `6a8e7fb2b6cd`: 1 warning - added the new `google_chat` enum value to the `data/source` response property for the response status `200` - **2026-08-24** `cd41b0efe7d0`: 1 info - added the optional property `data/workspace_email` to the response with the `200` status - **2026-08-22** `d4db007b26b2`: 1 info - added the optional property `warnings/skipped_custom_fields` to the response with the `200` status - **2026-08-19** `601861c5dfcf`: 3 info - added the optional property `data/child_issues/items/title` to the response with the `200` status - added the optional property `data/is_issue_group` to the response with the `200` status - added the optional property `data/parent_issue_group/title` to the response with the `200` status - **2026-08-13** `8478697d50cb`: 1 warning - added the new `customer_portal` enum value to the `data/source` response property for the response status `200` - **2026-07-26** `3e347e631c35`: 3 info - added the optional property `data/active_time_by_user` to the response with the `200` status - added the optional property `data/active_time_seconds` to the response with the `200` status - added the optional property `data/business_hours_active_time_seconds` to the response with the `200` status --- [Operation](https://skmtc.dev/usepylon/apis/pylon-api/docs/import/issues/:id/messages/post.md) - [API](https://skmtc.dev/usepylon/apis/pylon-api.md) - [Page](https://skmtc.dev/usepylon/apis/pylon-api/changes/import/issues/:id/messages/post)