# `offer_ended`

**Status 409.** The campaign has ended, so it can only be removed.

## What it means

The campaign's last day has passed. Changing it now would make the orders it paid look wrong, so it can be removed but not changed. Nothing was changed.

## What to do

Remove it with [`POST /stores/{store_key}/programme/offers/{offer_id}/remove`](https://matrixrewards.co.uk/docs/api/2026-10/stores.md#removeOffer), or add a new campaign with [`POST /stores/{store_key}/programme/offers`](https://matrixrewards.co.uk/docs/api/2026-10/stores.md#addOffer).

## Safe to send again?

No. The same request will get the same answer.

## Where you can meet it

- [`POST /stores/{store_key}/programme/offers`](https://matrixrewards.co.uk/docs/api/2026-10/stores.md#addOffer): Add an offer: a campaign, a product offer or a channel offer
- [`POST /stores/{store_key}/programme/offers/{offer_id}`](https://matrixrewards.co.uk/docs/api/2026-10/stores.md#changeOffer): Change an offer
- [`POST /stores/{store_key}/programme/offers/{offer_id}/remove`](https://matrixrewards.co.uk/docs/api/2026-10/stores.md#removeOffer): Remove an offer

Every code, and the shape of an error answer: [Errors](https://matrixrewards.co.uk/docs/errors.md).

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Page: https://matrixrewards.co.uk/docs/errors/offer_ended
Contract: 2026-10 sha256:35af153960028890fea5738799f5a71e535e1eea4dd3f6b8d5f50b37f02363da