---
title: "Extend a repeating schedule's range"
method: POST
path: "/signups/{id}/slot_series/{seriesId}/extend"
tags: ["Slots"]
---

# Extend a repeating schedule's range

`POST /signups/{id}/slot_series/{seriesId}/extend`

## Request

- Base URL: `https://thesignup.app/api/v1`
- URL: `https://thesignup.app/api/v1/signups/{id}/slot_series/{seriesId}/extend`
- Auth: HTTP bearer

Move the Series' `rangeEnd` out to `newRangeEnd` (`YYYY-MM-DD`) and generate the Occurrences the rule produces in the new stretch; existing Occurrences are not touched. The range can only grow: an earlier `newRangeEnd` is `400 bad_request`, as is a range over 3660 days from `rangeStart` or one that would produce more than 2000 Occurrences. Extending creates new dates, so an organization without a paid plan gets `402 upgrade_required` and nothing is written. Generating dates notifies nobody. Returns the Series and the Occurrences just created.

## Path parameters

- `id` string, uuid, required
- `seriesId` string, uuid, required

## Request body

- ExtendSlotSeriesRequest
  - `newRangeEnd` string, required

## Response `200`

The Series and the Occurrences the extension generated

- ExtendSlotSeriesResponse
  - `series` SlotSeries, required
    - `id` string, uuid, required
    - `eventId` string, uuid, required
    - `frequency` 'daily' | 'weekly' | 'monthly', required
    - `interval` integer, required
    - `rangeStart` string, required
    - `rangeEnd` string, required
    - `capacity` integer, required
    - `maxPerPerson` integer, required
    - `rule` object, required: The stored shift plan, in the shape `rule` was sent.
    - `timezone` string, nullable, required
    - `location` string, nullable, required
    - `dayQuestion` object, nullable, required: The Series' default Day Question, or null. A day's own question shadows it.
    - `createdAt` string, date-time, required
    - `updatedAt` string, date-time, required
  - `slots` Occurrence[], required
    - `id` string, uuid, required
    - `eventId` string, uuid, required
    - `startTime` string, date-time, required
    - `endTime` string, date-time, required
    - `maxParticipants` integer, required
    - `maxPerPerson` integer, required: The most spots one person may take on this slot. 1 (the default) is one spot per person; 0 is no per-person limit.
    - `title` string, nullable, required
    - `description` string, nullable, required
    - `location` string, nullable, required
    - `customField` object, nullable, required: The slot's own question, as stored. Read `question` for what the slot actually asks — a slot generated from a repeating shift may inherit the shift's question when this is null.
      - `name` string, required
      - `placeholder` string
      - `required` boolean, required
      - `type` 'short' | 'long', required
    - `question` object, nullable, required: The question participants are asked when taking this slot: the slot's own, else the repeating shift's. Null when nothing is asked.
      - `label` string, required
      - `placeholder` string: Example answer, shown as a hint in the answer box. Absent when none was given.
      - `required` boolean, required
    - `questionSource` 'own' | 'series' | 'null', nullable, required: "own" when `question` is the slot's own; "series" when inherited from its repeating shift; null when nothing is asked.
    - `createdAt` string, date-time, required
    - `seriesId` string, uuid, required
    - `seriesDate` string, required: The date the rule generated this Occurrence for, `YYYY-MM-DD`.
    - `shiftIndex` integer, required: Position in the Series' shift plan. `(seriesId, shiftIndex)` is the Shift.
    - `detached` boolean, required
    - `cancelledAt` string, date-time, nullable, required: When the Occurrence was cancelled, or null while it is live. A cancelled Occurrence keeps its registrations.

## Other responses

- `400`: Bad request — body or path could not be parsed
- `401`: Unauthenticated — credentials missing, malformed, invalid, or revoked
- `402`: Upgrade required — feature is gated by a higher billing tier
- `403`: Forbidden — credentials valid but lack the required scope
- `404`: Not found
- `422`: Validation failed — request body / query / path is structurally wrong
- `429`: Rate limited or daily ceiling exceeded
- `500`: Internal server error

---

[API](https://skmtc.dev/thesignup/apis/thesignup-api.md) · [All operations](https://skmtc.dev/thesignup/apis/thesignup-api/llms.txt) · [OpenAPI document](https://skmtc.dev/thesignup/apis/thesignup-api/revisions/c6da7cf92172?raw)