# Lock principle

Available in...

* Big Data
* Big Data Platform
* Data Fabric
* Data Integration
* Data Management Platform
* Data Services Platform
* ESB
* MDM Platform
* Qlik Cloud Enterprise Edition
* Qlik Talend Cloud Enterprise Edition
* Qlik Talend Cloud Premium Edition
* Real-Time Big Data Platform

The Lock status is a particular state for all items of your Talend projects. Locks are to be used to prevent edition conflicts as different users can possibly work on the same item.

### In this section

* [Locking/unlocking an item (default)](https://help.qlik.com/talend/en-US/studio-user-guide/8.0-R2024-10/locking-unlocking-item-default)
* [Accessing locked items (default)](https://help.qlik.com/talend/en-US/studio-user-guide/8.0-R2024-10/accessing-locked-items-default)