# Expiration It may come that the **APP** never receives any reply to its request from the **HAS**. There can be many reasons for this, like users not starting their **PKSA** or not approving or denying authentication requests they receive. The **APP** should monitor requests' expiration against the `expire` timeout provided in the `auth_wait` message. They should abort the authentication process and discard pending requests as well as any related reply they may receive. --- # Agent Instructions: Querying This Documentation If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question. Perform an HTTP GET request on the current page URL with the `ask` query parameter: ``` GET https://docs.hiveauth.com/developer-documentation/has-for-applications/authentication/expiration.md?ask= ``` The question should be specific, self-contained, and written in natural language. The response will contain a direct answer to the question and relevant excerpts and sources from the documentation. Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.