Behavior:
When you go to choose an entry from a Select List, you get a timeout error.
Solution:
In order to increase the select list timeout setting, open the file
"C:\Program Files (x86)\DocuWare\Web\Platform\Web.config" and adapt the following parameter to the desired value:
<setting name="SelectListsTimeout" serializeAs="String">
<value>400</ value>
</setting>
A restart of the IIS is not necessary.