---
title: "MTOfflineStorageError | Mobile sdk | Mobile sdk ios | Ios"
description: "Errors that can occur during offline storage operations."
---

> For AI agents: a documentation index is available at [/llms.txt](https://docs.maptiler.com/llms.txt). Markdown versions of all pages are available by appending .md to any URL.

# MTOfflineStorageError

```
public enum MTOfflineStorageError : Error, LocalizedError
```

Errors that can occur during offline storage operations.

-   `[writeFailed(_:)](#/s:11MapTilerSDK21MTOfflineStorageErrorO11writeFailedyACs0F0_pcACmF)`
    
    Undocumented
    
    #### Declaration
    
    Swift
    
    ```
    case writeFailed(Error)
    ```
    
-   `[errorDescription](#/s:10Foundation14LocalizedErrorP16errorDescriptionSSSgvp)`
    
    #### Declaration
    
    Swift
    
    ```
    public var errorDescription: String? { get }
    ```