Data Merge > Create Tagged PDF checkbox
On Data Marge > Export to PDF just let us select the "Create Tagged PDF".
For example, I have 1300 records, an 8 page document template and have to export 1300x 8pp uniquely named PDF files - files names from data.
Currently have to:
1. run the merge in groups of 100 records otherwise InDesign will hang
2. create tagged PDFs from the 13x 800pp InDesign files (50 minutes per 100)
3. combine PDFs
4. create bookmarks from content
5. split by bookmark structure
Points 1, 2 and 3 could be combined by simply allowing "Create Tagged PDF" and save two days work as Data Merge > Export to PDF takes 20 minutes to export ALL the records without hanging.
Colin Flashman commented
I have a free script that will export directly to uniquely named PDFs that may be a better workaround. It is called "Data Merge to Unique Names" - https://colecandoo.com/downloads/