Creating an Action to Split PDFs and name by top level bookmark

It looks like this topic was discussed in another forum post. Check this out and see if it helps. https://community.adobe.com/t5/acrobat/javascript-to-split-top-level-bookmarks-using-bm-names-for-file-names/td-p/9345051/page/2?page=1

It can be done using a script.

If you need it to do this on a bunch of file, you can do it with the split button. If you need to include this in an action with others process, than you need to use a javascript that do that and add it to your action.