RE: Create a folder in the Data directory Doug Finner 28.Oct.13 03:18 PM a Web browser Applications Development 7.0.3 FP1Windows XP
If I can expand a bit on Carl's post, if the app is Notes client based, then:
If the code runs under the user's credentials, then mkdir works on the user's system unless you're allowing them to map drives on the Domino server and if you're doing that, well then you are well and completely hosed! ;-)
If the code is in an agent, then make sure the agent 'runs on server' and the agent signers is allowed to make directories.