To execute the publication acknowledgment tasks, access the Tasks section. This section will display the publication execution tasks from the documents that have been revised, to which you have the "Acknowledgment" control.

Locate the document whose publication acknowledgment task you wish to execute.

By opening it, the document data will be displayed. 

The CONFIRM PUBLICATION ACKNOWLEDGMENT button will also be displayed.

Click on it to execute the task.

Note: If the document is opened in other sections, the execution button will also be available in its data screen, as long as it is a document with a pending publication acknowledgment task.