# Quote expiration deadline By default, quotes do not have an expiration date. Instead, the market determines whether a quote is still valid. If a user delays confirming the trade and market conditions change, the trade may fail due to insufficient amounts, as the previously calculated quote may no longer be executable. However, each quote may include an optional field called *quoteDeadline*. This field specifies the expiration time for the quote. If the quote is confirmed after this deadline, the trade will fail. Therefore, integrators must pay attention to this field and display it appropriately in the UI to help prevent failed trades for users. If the *quoteDeadline* field is absent, it indicates there is no expiration for the quote. --- # 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.unizen.io/api-introduction/before-you-get-started/quote-expiration-deadline.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.