After customize the list_KD.htmpl form, adding the Document Id in order to be able to do Knowledge Search by Document Id field, as show in the following image:
If a Knowledge Document Search is done directly by the Document Id, it is not working.
Although the document exists, it is not found.
Invalid internal datatype for Document Id field variable.
Release : 17.2
Component : SDM KNOWLEDGE MANAGEMENT
Using a custom list_KD.htmpl form, customized just to include in the search filter the Document Id, in a SD 17.2 GER the issue is reproduced and the search by Document Id is not working, and although the document exists , it is not found.
But issue is not reproduced any more in a 17.2 GER with RU04.
So, no defect number identified but issue get fixed in Service Desk version 17.2 GER RU04 and later.