---
title: "Log (Fast)"
slug: "log-fast"
updated: 2025-07-28T14:21:31Z
published: 2025-07-28T14:21:31Z
canonical: "documentation.decisions.com/log-fast"
---

> ## Documentation Index
> Fetch the complete documentation index at: https://documentation.decisions.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Log (Fast)

| ## Step Details |
| --- |
| **Introduced in Version** | 4.0.0 |
| **Last Modified in Version** | 5.0.0 |
| **Location** | Flow Management > Error Handling |

The **Log (fast)** step builds the log message in the Logging Report. Log Fast writes the Log Messages in a different thread. This ensures that it does not block the current process.

---

## Properties

#### Inputs

| Property | Description | Data Type |
| --- | --- | --- |
| Insert Space Between | Inserts a space between log messages | Boolean |
| Level | Declares the level of importance and severity of the error described in the log. | --- |
|  | Info | This information to the user on an occurrence is typically used outside of error tracking. | --- |
|  | Debug | This catches most exceptions that do not fall under the other categories. | --- |
|  | Verbose | Provides more information to the user | --- |
|  | Warn | This tracks potential issues that do not impede the process from running. These are typically less critical issues. | --- |
|  | Error | This tracks when a process cannot complete properly. | --- |
|  | All | Outputs all information | --- |
|  | Fatal | This environment-breaking level warning stops a process (or multiple processes) from running. | --- |
| Log 01-20 | Log message to add | String |
| Log Category | Users may enter one of these pre-defined categories or create their own [custom log categories](/v8/docs/creating-custom-log-files). | --- |

#### ![](https://cdn.document360.io/6ef8bcc1-6489-4486-9ad1-83acff7e5df0/Images/Documentation/2025-07-28_10h20_53.png)

#### 

Related Information

Article: [Logging Overview](https://documentation.decisions.com/docs/logging-overview) [Logging Settings](https://documentation.decisions.com/docs/logging-settings) [Reading Logs](https://documentation.decisions.com/docs/reading-logs)

## Related

- [Log](/log.md)
- [Log Current Flow State](/log-current-flow-state.md)