---
title: How to Handle Prerequisite Task Completion Before Starting a New Task ?
description: You must complete all prerequisite tasks before starting a new dependent task.
---

[Skip to content](https://support.leucine.io/knowledge-base/how-to-handle-prerequisite-task-completion-before-starting-a-new-task#main-content)

English

Show submenu for translations

[More support](https://support.leucine.io/knowledge-base/kb-tickets/new?hsLang=en) [Customer portal](https://support.leucine.io/customers?hsLang=en)

![Leucine medium.png\]](https://support.leucine.io/hs-fs/hubfs/Leucine%20medium.png?width=200&height=38&name=Leucine%20medium.png)

Open main navigation

Close main navigation

- English
  
  Show submenu for translations
- [More support](https://support.leucine.io/knowledge-base/kb-tickets/new)
- [Customer portal](https://support.leucine.io/customers)
- [Go to Leucine.io](https://www.leucine.io/)

[Go to Leucine.io](https://www.leucine.io/)

 Hello. How can we help you?

- There are no suggestions because the search field is empty.

1. [Knowledge Base](https://support.leucine.io/knowledge-base?hsLang=en)
2. [Using Leucine Platform v4.7](https://support.leucine.io/knowledge-base/using-leucine-platform-v4-7?hsLang=en)
3. [JOBS](https://support.leucine.io/knowledge-base/using-leucine-platform-v4-7?hsLang=en#jobs)

# How to Handle Prerequisite Task Completion Before Starting a New Task ?

## You must complete all prerequisite tasks before starting a new dependent task.

1. Log in to the Leucine platform using the provided URL.   
   ![](https://support.leucine.io/hs-fs/hubfs/image-png-Jun-11-2024-01-02-06-6948-PM.png?width=1283&height=721&name=image-png-Jun-11-2024-01-02-06-6948-PM.png)  
   ![](https://support.leucine.io/hs-fs/hubfs/image-png-Jun-11-2024-01-02-10-0859-PM.png?width=1279&height=722&name=image-png-Jun-11-2024-01-02-10-0859-PM.png)  
   ![](https://support.leucine.io/hs-fs/hubfs/image-png-Jun-11-2024-01-02-13-6111-PM.png?width=1275&height=721&name=image-png-Jun-11-2024-01-02-13-6111-PM.png)  
   ![](https://support.leucine.io/hs-fs/hubfs/image-png-Jun-11-2024-01-02-16-0172-PM.png?width=1279&height=720&name=image-png-Jun-11-2024-01-02-16-0172-PM.png)  
2. Navigate to the process containing the task you wish to start.   
   ![](https://support.leucine.io/hs-fs/hubfs/image-png-Jun-11-2024-01-03-44-4930-PM.png?width=1285&height=718&name=image-png-Jun-11-2024-01-03-44-4930-PM.png)
3. Attempt to start the task.   
   ![](https://support.leucine.io/hs-fs/hubfs/image-png-Jun-11-2024-01-04-01-6785-PM.png?width=1279&height=722&name=image-png-Jun-11-2024-01-04-01-6785-PM.png)  
   ![](https://support.leucine.io/hs-fs/hubfs/image-png-Jun-11-2024-01-04-35-5722-PM.png?width=1279&height=719&name=image-png-Jun-11-2024-01-04-35-5722-PM.png)
4. If there is an uncompleted prerequisite task, an error message will appear.  
   ![](https://support.leucine.io/hs-fs/hubfs/image-png-Jun-11-2024-01-04-50-8796-PM.png?width=1281&height=721&name=image-png-Jun-11-2024-01-04-50-8796-PM.png)
5. The error message will redirect you to the incomplete prerequisite task that needs completion.    
   ![](https://support.leucine.io/hs-fs/hubfs/image-png-Jun-11-2024-01-06-09-8799-PM.png?width=1277&height=720&name=image-png-Jun-11-2024-01-06-09-8799-PM.png) 
6. Complete the prerequisite task as directed by the system.   
   ![](https://support.leucine.io/hs-fs/hubfs/image-png-Jun-11-2024-01-06-29-1879-PM.png?width=1277&height=720&name=image-png-Jun-11-2024-01-06-29-1879-PM.png)  
7. After completing the prerequisite task, return to the initial task you wished to start.   
   ![](https://support.leucine.io/hs-fs/hubfs/image-png-Jun-11-2024-01-06-45-2768-PM.png?width=1282&height=724&name=image-png-Jun-11-2024-01-06-45-2768-PM.png)  
8. Start the task again; it should now proceed without error.  
   ![](https://support.leucine.io/hs-fs/hubfs/image-png-Jun-11-2024-01-06-56-6062-PM.png?width=1282&height=724&name=image-png-Jun-11-2024-01-06-56-6062-PM.png)

- [Using Leucine Platform v4.7](https://support.leucine.io/knowledge-base/using-leucine-platform-v4-7?hsLang=en#main-content)

    - [User Management and Access Control](https://support.leucine.io/knowledge-base/using-leucine-platform-v4-7?hsLang=en#user-management-and-access-control)
    - [Process Creation and Management](https://support.leucine.io/knowledge-base/using-leucine-platform-v4-7?hsLang=en#process-creation-and-management)
    - [JOBS](https://support.leucine.io/knowledge-base/using-leucine-platform-v4-7?hsLang=en#jobs)
    - [Ontology](https://support.leucine.io/knowledge-base/using-leucine-platform-v4-7?hsLang=en#ontology)
- [Using Leucine Platform v4.9](https://support.leucine.io/knowledge-base/using-leucine-platform-v4-9?hsLang=en#main-content)

    - [User Management and Access Control](https://support.leucine.io/knowledge-base/using-leucine-platform-v4-9?hsLang=en#user-management-and-access-control)
    - [Process Creation and Management](https://support.leucine.io/knowledge-base/using-leucine-platform-v4-9?hsLang=en#process-creation-and-management)
    - [JOBS](https://support.leucine.io/knowledge-base/using-leucine-platform-v4-9?hsLang=en#jobs)
    - [Ontology](https://support.leucine.io/knowledge-base/using-leucine-platform-v4-9?hsLang=en#ontology)
- [Using Leucine Platform v4.10](https://support.leucine.io/knowledge-base/using-leucine-platform-v4-10?hsLang=en#main-content)

    - [User Management and Access Control](https://support.leucine.io/knowledge-base/using-leucine-platform-v4-10?hsLang=en#user-management-and-access-control)
    - [Process Creation and Management](https://support.leucine.io/knowledge-base/using-leucine-platform-v4-10?hsLang=en#process-creation-and-management)
    - [Jobs](https://support.leucine.io/knowledge-base/using-leucine-platform-v4-10?hsLang=en#jobs)
    - [Ontology](https://support.leucine.io/knowledge-base/using-leucine-platform-v4-10?hsLang=en#ontology)
- [Using Leucine Platform v5.0](https://support.leucine.io/knowledge-base/using-leucine-platform-v5-0?hsLang=en)
- [Training Session Videos](https://support.leucine.io/knowledge-base/training-session-videos?hsLang=en)

[![Leucine](https://support.leucine.io/hs-fs/hubfs/Leucine%20medium-1.png?width=200&height=38&name=Leucine%20medium-1.png "Leucine")](https://www.leucin.io)

Copyright © 2026, Leucine, Inc.