Hi! Thank you for your fast answer!
“article” is the custom post type and “2019_214” is the taxonomy term which is stored in the taxonomy “article_id”. Every ebook has a taxonomy with that information, so the permalink is created fine.
Oh, I see now that AIOSEO detects the title correctly, but it isnt written in title! Now i have to dig in the seo plugin and replace the title in header with an AIOSEO command, right?
Maybe the taxonomy is detected as taxonomy archive page… and i have to change the header in archive template?
Thank you!