---
title: "What Is a Modifier?"
slug: "what-is-a-modifier"
description: "A brief introduction to Lasernet Core modifiers."
updated: 2026-04-14T14:24:40Z
published: 2026-04-14T14:24:40Z
canonical: "kb.lasernetgroup.com/what-is-a-modifier"
---

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

# What Is a Modifier?

**Applies to:** Lasernet Core 11

Modifiers are small components that can modify the content of a JobInfo. The most common JobInfo to modify is JobData, which carries the data of the job being processed by the Job Engine.

Modifiers can run:

- On the enter or exit side of Lasernet Core modules (see the **Enter Modifiers** and **Exit Modifier** tabs in a module’s **Properties** window).
- In the Form Engine.
- In the XML Transformer.

![The General tab of the Choose Modifier window.](https://cdn.document360.io/c831ef63-c6b3-48ee-b443-3e33644e4e2e/Images/Documentation/what-is-a-modifier-image-s5g23oar.png)

When you choose a modifier, click the **Run on** tab to decide whether to run the modifier on JobData (default) or run the modifier on a user-defined JobInfo. The modified result can be assigned to JobData (default) or a user-defined JobInfo.

![The Run On tab of the Choose Modifier window.](https://cdn.document360.io/c831ef63-c6b3-48ee-b443-3e33644e4e2e/Images/Documentation/what-is-a-modifier-image-u14wxz9z.png)

Modifiers are categorized into the following groups:

- Authentication
- Communication
- Conversion
- Enrichment
- Miscellaneous

![The Add Modifier window.](https://cdn.document360.io/c831ef63-c6b3-48ee-b443-3e33644e4e2e/Images/Documentation/what-is-a-modifier-image-nd9uqxjj.png)

To access this list, click **Modifier** (in the **Type** row) in the **Choose Modifier** window, and then click **Add**.

![The General tab of the Choose Modifier window.](https://cdn.document360.io/c831ef63-c6b3-48ee-b443-3e33644e4e2e/Images/Documentation/what-is-a-modifier-image-4inkj1nh.png)

You can also run other type of objects at the modifier event point.

- Commands
- Scripts
- XML transformers
- PDF form fillers

> [!WARNING]
> Important
> 
> If a modifier does not run successfully, the Lasernet Core job engine generates a failed job. Previous Lasernet versions generated only a JobInfo error message in this scenario. A modifier event will fail in situations such as authentication failure, failure of communication to an endpoint or database look-up, conversion error, scripting error, an XML Transformer error, and so on.