The amount of entries in a select lists in Web Client is limited to 50 by default.
However, you can change that value if necessary.
In order to increase the number of items displayed in the select list, open the file
"C:\Program Files (x86)\DocuWare\Web\Platform\Web.config" and adapt the following parameter to the desired value:
<setting name="SelectListsMaxCount" serializeAs="String">
Save. A restart of the IIS is not necessary.
Be aware, that changing the default value can effect the performance of the system!