Available in Mobile WMS for Dynamics AX/365FO version 3.14 or newer.
Document Queue displays the document type but maybe you need to know the class involved in processing the document.
...
In the table MobParameters you find parameters for Mobile WMS. 
...
2) Another way to turn developer mode on, is by using Mobile WMS import.
...
Another feature is that you can change the status of the record so you can reprocess a request. See image below at the right side. Here you have an easy way to change the status. 
Pages - declared in class
From the Pages you also will be able to find the class a page is declared in. See below image.
...