# Changes
A change is a modification of the information system's infrastructure.
A change can be created either from a ticket form or a problem form, in tab **Changes**, or from menu **`Assistance` > `Changes`**.
The form to create a change is similar to the ticket creation form and shares with it many terms: *requester*, *watcher*, *assigned to*, *status*, *urgency*, *impact*, *priority*, *category*. For more information see [Manage tickets](https://help.glpi-project.org/documentation/modules/assistance/tickets/ticketmanagement). The validation process is also the same as tickets in order to allow preliminary validation of the change (tab *Validations*).
Once the change is created, it is possible to attach tickets but also impacted items (tab *Items*). An analysis phase (tab *Analysis*) consists in describing impacts and controls list in order to implement this change through a deployment plan, a backup plan and a checklist (tab *Plans*).
Same as tickets, task, costs and solution allow to follow and solve the change. For complex changes management, a change can be linked with one or several projects allowing a mode detailed management ([Manage projects](https://help.glpi-project.org/documentation/modules/tools/projects)).
Changes use their own notifications (see [configuration of email follow-ups](https://help.glpi-project.org/documentation/modules/configuration/notifications/email_notifications)).
## Add a change
* To add a new change, click on **+ Add** at the top of the screen
* Fill in the various tabs of your change to make it as complete as possible
### Status
Several statuses are available, including some for test phases, validation, qualification, etc.
## Delete a change
* To delete a change, click on the change concerned
* Click on put in trashbin at the bottom of the screen
## Restore or delete permanently
* To delete or restore a change, click on the trashbin (at top right of screen)
* Select the change concerned
* Click on **Actions**
* Select **Restore** or **Delete permanently**
* Click on **Post**
{% hint style="danger" %}
**Delete permanently** remove definitively the change, you won't be able to get it back.
{% endhint %}
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## The different tabs
### Analysis
This tab contains :
* Impacts
* Control list in order to implement the change.
### Plans
This plan contains :
* Deployment plan
* Backup plan
* Checklist
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### Statistics
The statistics are intended to provide information, showing how long it takes to take over, close a change, etc. Statistics similar to tickets
Go to Statistics
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### Approvals
Approval allows you to send requests to groups and/or users (or certain users within a group) in order to obtain their validation of the change in question. You can see Approvals for more information.
Go to Approvals
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### Cost
Costs can be linked to the budget in order to estimate whether an expense will fit within the allocated budget.
Go to Costs
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### Projects
This tab allows to attach a project to the change and displays already attached projects.
Go to Projects
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### Problems
Changes may be due to problems. In this tab, you can link a problem to your change.Tickets
Go to Problems
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### Changes
A change may have been introduced via a ticket. In this tab you can attach the ticket(s) affected by the change.
Go to Changes
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### Tickets
List all tickets are linked to the problem. You can add a new ticket or link an existing ticket
Go to Tickets
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### Items
#### Link a device
You can attach any item from the list below:
* Computer
* Database
* Device
* Enclosure
* Monitor
* Network device
* Phone
* Printer
* Rack
* Server room
* Software
Go to Items
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### Impact Analysis
Impact analysis allows you to create diagrams of your infrastructure and see the impact of a change on it.
Go to Impact analysis
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### Knowledge base
The *Knowledge base* tab is used to show or add linked knowledge base articles.
Go to Knowledge base
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### Notes
The *Notes* tab provides a free text field for storing additional information. Notes are displayed in the order of their creation. You can also add a document.
Go to Notes
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### History
The *History* tab is used to show any changes made to an item. The following information about the changes is available:
* ID of the change.
* Date and time the change was made.
* User who made the change. If this field is not filled, it means that the action was done automatically (For example: automatic inventory update).
* Field that was changed.
* Description of the change that was made.
The description of the change represents either the difference between the old and the new value (For example with location field: Change HQ to Remote Office A), or the explanation of the action which was carried out (For example: Uninstallation of a software: "Gimp 2.0").
{% hint style="info" %}
For dropdowns or objects with a parent/child relationship, the modification of a child will appear in the history of the parent element.
{% endhint %}
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### All Information
For an item, all information is displayed on one page from the *All* tab. This shows all of the tabs of an object's form in one view, one below the other.
