I have a file with 72 pages (done with the artboard). The export to PDF looks fine, but when I want to send the PDF to a print shop, they refuse it as the pages have different sizes/formats.
All artboards are copied from one "master" but some of the pages (20, page 2 to 21 from 72) create the error. I already tried to copy a "correct" page and delete the faulty page, but the result is the same. Also Adobe Preflight shows the same error message.
Does anyone have an idea, what I could try to get this fixed?