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

# Updating LLM Nodes in Pipelines

> The LLM node structure has been updated with a new configuration format. If you have existing pipelines created before this change, you'll need to manually upda

## Overview

**What changed:**

* Old LLM nodes used a single **Prompt** field
* New LLM nodes require separate **System** and **Task** fields
* The UI has been redesigned with dedicated sections for each parameter

**What you need to do:**

* Open your pipeline and manually update each LLM node to the new format
* Add values for the new required fields: **System** and **Task**
* Save your pipeline after updating

## Visual Comparison

### Old LLM Node (No longer supported)

The previous LLM node configuration had a simpler structure with just a Prompt field:

<img src="https://mintcdn.com/epam-a74ef051/17A86izaGCzTjYjh/img/migration/v2.0.0/old-llm-node.png?fit=max&auto=format&n=17A86izaGCzTjYjh&q=85&s=0c138e54d8d00432267dff90fb3d8d71" alt="Old LLM Node" width="356" height="364" data-path="img/migration/v2.0.0/old-llm-node.png" />

### New LLM Node (Current format)

The updated LLM node now requires System and Task fields:

<img src="https://mintcdn.com/epam-a74ef051/17A86izaGCzTjYjh/img/migration/v2.0.0/new-llm-node.png?fit=max&auto=format&n=17A86izaGCzTjYjh&q=85&s=2449eb705b4395f798c814690e24e450" alt="New LLM Node" width="459" height="614" data-path="img/migration/v2.0.0/new-llm-node.png" />

## Symptoms

If you have an existing pipeline with LLM nodes created before this update, you may experience:

* Pipeline fails to load or execute
* LLM node shows configuration issues
* Errors when trying to run the pipeline

## Solution

Follow these steps to update your LLM nodes manually:

### Step 1: Open Your Pipeline

1. Navigate to **[Pipelines](../../menus/pipelines)** in the main menu
2. Find and click on the pipeline that's experiencing issues
3. Click the **Configuration** tab
4. Select the **Flow** tab to view the pipeline flow diagram

### Step 2: Update the LLM Node

1. Click on the **LLM node** in the flow diagram to open its configuration panel
2. You'll see three input fields:
   * **System**: Enter your system prompt (instructions for the AI's behavior and role)
   * **Task**: Enter the specific task or user query
   * **Chat History**: Optional conversation history (can be left empty)
3. Fill in the required fields:
   * **System**: Add the system-level instructions (e.g., "You are a helpful assistant that...")
   * **Task**: Add the user task or prompt (e.g., "Analyze the provided code and suggest improvements")
4. Click **Save** in the configuration panel

### Step 3: Test the Pipeline

Run your pipeline to verify the LLM node works correctly with the new configuration.

## Tips

<Tip title="Migrating Your Old Prompt">
  If you need to retrieve your old prompt content:

  * In the pipeline **Configuration** tab, switch to the **YAML** tab
  * Look for your LLM node in the YAML structure
  * Find the old prompt content to help you fill in the new **System** and **Task** fields

  If your old LLM node had a single prompt, you can split it:

  * Move system-level instructions to the **System** field
  * Move the specific task/query to the **Task** field
</Tip>

<Info title="Using Variables">
  You can still use variables in these fields by clicking the variable icon next to each input field and selecting from your pipeline variables.
</Info>