I'm using wordpress as a cms, so on my custom post types, I don't need the title and only use custom fields. The title however is still used, and receives the value "Auto Draft", which I don't want - even if I won't use the permalink for now.
The quickest and easiest solution would be to copy the value from my custom field "ref._nr." to the title, as this will be my unique identifier, and it will serve better in case I need to make changes later.
Unfortunately, I have no idea as to where to start with this. In case you want to contribute code, the custom post type is called "listing".
All input is much appreciated!