When functionality is added to ArcGIS Workflow Manager, workflow items can be upgraded to enable new features. This option provides workflow item owners the flexibility to  perform upgrades at a convenient time without affecting other users' ability to complete work in the system. When a workflow item upgrade is available, a notification appears in the Notification Center window  for  the workflow item owner with sufficient privileges.
 for  the workflow item owner with sufficient privileges.
Note:
Workflow items created before Workflow Manager Server 11.2 must be upgraded before they can be accessed.
To upgrade a workflow item, complete the following steps:
- Access the Workflow Manager web app.
-  On the My Workflow Items page, click a workflow item to open it.The workflow item opens in the Workflow Manager web app. Note:If the workflow item was created before Workflow Manager Server 11.2, the Workflow Item Out of Date message appears and you must upgrade the workflow item. 
- If you have a notification in the Notification Center window  , click  Learn More. , click  Learn More.
- Do one of the following to upgrade the workflow item:- Click Upgrade Item to upgrade the item.
 - Click Upgrade Later to cancel and perform the upgrade at a later time.Note:Workflow item upgrades can only be performed by the workflow item owner with sufficient privileges. If you choose to upgrade at a later time, workflow users can continue using the workflow item to complete work in the web app. 
 When the upgrade is complete, the Item has been upgraded successfully message appears.