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In the Streams module, click on the Streams tab.
The list of flows registered in the system will be displayed.
Here are two ways to generate a new revision of a flow:
Creating a New Review from the listing:
Select the flow you want to request approval for and click on the context menu 
.
Then click New Review.
The system will ask if you want to create a new revision of the selected flow. Click Submit.
After the action, the system will direct you to edit the flow and a version in progress will be created.
Creating a New Review by the flow details:
View the flow you want to generate a new revision for, click on the context menu .
Then click on Preview.
The module will enter the flow view. After that click on 
.
Then click Submit.
After the action, the system will direct you to edit the flow and a version in progress will be created.
