# Pdf – Set InDesign PDF export resolution for vector graphics

I have an InDesign print document with several Illustrator .ai vector files. When I export the PDF, I believe the vector graphics are being rasterized at lower than 200 DPI. (I'm receiving a warning that an image is under 200 DPI from a service I upload the PDF to. They didn't say which, but I have narrowed it down to the vector graphics.) I have looked through the PDF export options and see nothing that mentions vector graphics. Where can I set this?