---
id: "P:cAlgo.API.OptimizationProcess.OptimizationError"
kind: "property"
type: "T:cAlgo.API.OptimizationProcess"
url: "https://help.ctrader.com/ctrader-algo/references/Plugin/Optimization/OptimizationProcess/OptimizationError/"
---

> Documentation index for agents: https://help.ctrader.com/ctrader-algo/llms.txt · machine index: https://help.ctrader.com/ctrader-algo/api.json

# OptimizationProcess.OptimizationError

Member of [OptimizationProcess](https://help.ctrader.com/ctrader-algo/references/Plugin/Optimization/OptimizationProcess/index.md).

## OptimizationError

Gets the error information if the optimization process failed.

Environments: Desktop supported · CLI not supported · Cloud not supported.

- CLI: Available to plugins only, and plugins cannot run in the CLI.
- Cloud: Available to plugins only, and plugins cannot run in the cloud.

C#:

```csharp
OptimizationError OptimizationError {get;}
```

Python:

```python
optimizationProcess.OptimizationError: OptimizationError
```

### Returns

`OptimizationError` — 

Available since cAlgo.API 5.9.

### Examples

C#:

```csharp
Optimization.Completed += args =>
{
    if (args.Process.OptimizationError != OptimizationError.None)
        Print("Optimization failed: {0}", args.Process.OptimizationError);
};
```

Python:

```python
def on_start(self):
    api.Optimization.Completed += self.on_optimization_completed

def on_optimization_completed(self, args):
    # None is a Python keyword, so the enum value is read with getattr
    if args.Process.OptimizationError != getattr(OptimizationError, "None"):
        api.Print(f"Optimization failed: {args.Process.OptimizationError}")
```