---
title: "Update a reserved slot"
method: PATCH
path: "/v2/slots/reservations/{uid}"
tags: ["Slots"]
---

# Update a reserved slot

`PATCH /v2/slots/reservations/{uid}`

<Note>Please make sure to pass in the cal-api-version header value as mentioned in the Headers section. Not passing the correct value will default to an older version of this endpoint.</Note>

## Path parameters

- `uid` string, required

## Headers

- `cal-api-version` string, required

## Request body

- ReserveSlotInput20240904
  - `eventTypeId` number, required — The ID of the event type for which slot should be reserved.
  - `slotStart` string, required — ISO 8601 datestring in UTC timezone representing available slot.
  - `slotDuration` number — By default slot duration is equal to event type length, but if you want to reserve a slot for an event type that has a variable length you can specify it here as a number in minutes. If you don't have this set explicitly that event type can have one of many lengths you can omit this.
  - `reservationDuration` number — ONLY for authenticated requests with api key, access token or OAuth credentials (ID + secret). For how many minutes the slot should be reserved - for this long time noone else can book this event type at `start` time. If not provided, defaults to 5 minutes.

## Response `200`

- ReserveSlotOutputResponse20240904
  - `status` 'success' | 'error', required
  - `data` ReserveSlotOutput20240904, required
    - `eventTypeId` number, required — The ID of the event type for which slot was reserved.
    - `slotStart` string, required — ISO 8601 datestring in UTC timezone representing available slot.
    - `slotEnd` string, required — ISO 8601 datestring in UTC timezone representing slot end.
    - `slotDuration` number, required — By default slot duration is equal to event type length, but if you want to reserve a slot for an event type that has a variable length you can specify it here. If you don't have this set explicitly that event type can have one of many lengths you can omit this.
    - `reservationUid` string, required — The unique identifier of the reservation. Use it to update, get or delete the reservation.
    - `reservationDuration` number, required — For how many minutes the slot is reserved - for this long time noone else can book this event type at `start` time.
    - `reservationUntil` string, required — ISO 8601 datestring in UTC timezone representing time until which the slot is reserved.

---

[API](https://skmtc.net/calcom/apis/cal-diy-api-v2.md) · [All operations](https://skmtc.net/calcom/apis/cal-diy-api-v2/llms.txt) · [OpenAPI document](https://skmtc-service-staging.skmtc.workers.dev/v1/apis/calcom/cal-diy-api-v2/revisions/16de9d3eb7b3/schema)