> For the complete documentation index, see [llms.txt](https://dev.ucommerce.net/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://dev.ucommerce.net/readme/headless/deprecation.md).

# Deprecation

Deprecated endpoints will be marked with the HTTP header called `X-DEPRECATION-NOTICE`.

**Example:**

```json
"X-DEPRECATION-NOTICE": "PagingToken is deprecated. use NextPagingToken instead."
```