Today when trying different settings with Basic Authentication and SOA Suite, I wanted to from the embedded OWSM Policy Repository of JDeveloper to the one stored on the application server. In JDeveloper you can do that through preferences (Tools | Preferences). See this blog for more details.
Click on the App Server Connection option and choose an existing connection through the Connections drop-down or add a new one by clicking New.
Unfortunately the change was not saved after clicking OK and when returning to the screen the option was still set to File Store.
A restart of JDeveloper just before changing the option solved the issue!