# Territory Expired

This function checks if a territory will be marked expired at a specified block number. This is normally after 100800 blocks the territory is frozen.

```rust
/// Retrieve Territory Expiration Status
///
/// This function checks if a territory will be marked expired at a specified block number.
///
/// # Parameters
///
/// - `block_number`: The block number at which to check the expiration status.
/// - `token`: The territory token used to identify the territory.
/// - `block_hash`: An optional parameter specifying the block hash at which to perform the query. If `None`, the latest block is used.
///
/// # Returns
///
/// Returns a `Result` that, on success, contains an `Option<bool>`:
/// - `Some(true)`: Indicates that the territory expiration task has been executed.
/// - `Some(false)`: Indicates that the territory expiration task has not been executed.
/// - `None`: If no information is available for the specified block number and token.
///
pub async fn territory_expired(
        block_number: u32,
        token: &str,
        block_hash: Option<H256>,
    ) -> Result<Option<bool>, Box<dyn std::error::Error>>
```


---

# 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://doc.cess.network/developer/cess-sdk/sdk-rust/chain/storage_handler/territory_expired.md?ask=<question>
```

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.