# About Single-Document Change Control (QualityDocs)

You can use the Single Document Change Control feature to regulate the processes of creating a new draft, moving a draft into its _Steady_ state (releasing it for use) or withdrawing an existing, approved document. When an Admin enables this feature, Vault automatically adds various configurations to your Vault, including a lifecycle, document type, and document fields. Admins can modify many of these default configurations. See [below][1].



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      <p><strong>Note</strong>: This feature is only available in QualityDocs Vaults and must be enabled on each Vault. Once enabled, Admins cannot disable it. If your organization is using <a href="/en/gr/42152/">Multi-Document Change Control</a>, we do not recommend also using this feature.</p>
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## About the Change Control Process

The Single Document change control process works by creating a relationship between two documents. The first document is the document you wish to change. The second document, which uses the standard document type _Document Change Control_, is created automatically when you open the change control request.

You can also manually establish a change control by creating a document with the _Document Change Control_ type and then establishing a _Target of Change_ relationship.

When change control is enabled on a particular document type, the _Create Draft_ option becomes unavailable and the _Open Change Control_ action replaces it. You must have the _Version_ permission to see the _Open Change Control_ action.

## Configuration Elements {#configuration-elements}

Vault automatically adds various configuration elements to your Vault when Change Control is turned on. These elements cannot be deleted or inactivated, but can otherwise be tailored to your business process. These configuration elements apply only to Single Document Change Control.

  * **Document Change Control document type**: This document type applies to the change control document. The document type itself cannot be deleted. This is the only document type that can be the source for a _Target of Change_ relationship.
  * **Document Change Control lifecycle**: This lifecycle applies to documents with the _Document Change Control_ type.
  * **Create Draft requires Change Control setting**: This setting appears on each document type (except _Document Change Control_) and enables change control behavior on that type. By default, the setting is not enabled for any document type. This mandates the use of change control to create drafts. You may still manually create a change control for document types without this setting.
  * **Target of Change relationship type**: When users open a document change control, Vault automatically creates a relationship of this type on the change control document with the changing document as the target of the relationship. Currently, relationship types are not configurable.
  * **Prior Target of Change relationship type**: When a change control is complete, Vault removes the _Target of Change_ relationship and creates this type of relationship, using the last associated version of the changed document as the target of the relationship. From a _Prior Target of Change_ relationship, users can reopen a change control. Currently, relationship types are not configurable.

## Default Single Document Change Control Workflows

In addition to the configuration elements above, Vault also provisions default workflows and related settings that you can use as a starting point for tailored configurations.

### Workflows

  * **Change Document Approval**: This is the standard change approval workflow, which collects approvals from the Quality team before performing the **_Create Draft_** action.
  * **Emergency Change Document Approval**: This workflow bypasses the Quality team approval process and only prompts the Workflow Owner for an eSignature before performing the **Create Draft** action.
  * **Withdraw Document Approval**: This workflow follows the same approval process as _Change Document Approval_, but instead performs the _Withdraw_ action when the workflow is complete.

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      <p><strong>Note</strong>: By default, QualityDocs provides separate change and withdrawal approval workflows for convenience, but many organizations use an identical workflow for both. A single workflow is often preferable if there are only minor differences in your organization’s process.</p>
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### Document Fields

Vault applies various default fields to the _Document Change Control_ document type. With the exception of _Document Change Action_, these fields are only informational. By default, Vault uses the _Document Change Action_ field to determine which workflows are available as user actions and which action to take when the change control is approved.

### Workflow Steps

The _Change Control Action_ workflow step, which is only available when the Change Control feature is enabled, allows a workflow on the change control document to perform an action on the target of change document. The actions available are limited to: _Create Draft_, _Set Status to Obsolete State_, and _Set Status to Steady State_. When the workflow step executes, Vault performs the selected action on the target of change document using elevated privileges and special auditing. Admins can also configure the workflow step to notify the affected document's owner. No action or change occurs on the workflow document during the execution of this step.

 [1]: #configuration-elements