---
title: "Changes to Acknowledge an incident"
method: POST
path: "/api/pulses/incidents/{incident_id}/acknowledgement/"
---

# Changes to Acknowledge an incident

`POST /api/pulses/incidents/{incident_id}/acknowledgement/`

> Every recorded change to this operation, newest first.

## Timeline

Changed in 2 of 12 revisions.

- **2026-10-21** `c30bcb383ee8`: 15 breaking, 3 warning, 4 info
- **2026-10-02** `b830b79cfd52`: 1 info

## Changes

- **2026-10-21** `c30bcb383ee8`: 15 breaking, 3 warning, 4 info
  - request body became required
  - the response property `acknowledged_at` became nullable for the status `200`
  - the response property `dominant_fingerprint` became nullable for the status `200`
  - the response property `ended_at` became nullable for the status `200`
  - the response property `impact/rate_multiplier` became nullable for the status `200`
  - the response property `primary_error/fingerprint` became nullable for the status `200`
  - the response property `resolution_reason` became nullable for the status `200`
  - the `baseline_error_rate` response's property format changed from `double` to no format for status `200`
  - the `impact/baseline_error_rate` response's property format changed from `double` to no format for status `200`
  - the `impact/error_rate` response's property format changed from `double` to no format for status `200`
  - the `impact/peak_error_rate` response's property format changed from `double` to no format for status `200`
  - the `impact/rate_delta` response's property format changed from `double` to no format for status `200`
  - the `impact/rate_multiplier` response's property type changed from `number, null` to `number`, and format from `double` to no format for status `200`
  - the `peak_error_rate` response's property format changed from `double` to no format for status `200`
  - the `resolution_reason` response's property type changed from no type to `string` for status `200`
  - added the new `no_traffic` enum value to the `resolution_reason` response property for the response status `200`
  - added the new `recovered` enum value to the `resolution_reason` response property for the response status `200`
  - added the new `stale` enum value to the `resolution_reason` response property for the response status `200`
  - api operation id `incidents_updateIncidentAcknowledgement` removed and replaced with `updateIncidentAcknowledgement`
  - api tag `Incidents` added
  - api tag `incidents` removed
  - removed `#/components/schemas/ErrorIncidentResolutionReason, subschema #2` from the `resolution_reason` response property `oneOf` list for the response status `200`
- **2026-10-02** `b830b79cfd52`: 1 info
  - endpoint added

---

[Operation](https://skmtc.dev/respan/apis/respan-api/docs/api/pulses/incidents/:incident_id/acknowledgement/post.md) - [API](https://skmtc.dev/respan/apis/respan-api.md) - [Page](https://skmtc.dev/respan/apis/respan-api/changes/api/pulses/incidents/:incident_id/acknowledgement/post)