PDF printing in ABAP - How can I ensure the correct format (A4/A3)?

Hello experts,

I americium facing a occupation erstwhile printing PDFs successful ABAP. The PDFs are disposable arsenic originals for documents and tin beryllium opened via transaction CV02N, for example.
Printing works successful principle, I bash this utilizing ADS_SR_OPEN, ADS_SR_CONFIRM etc.

Now to my problem: Some PDFs are successful A4 format, others successful A3 format. When printing, however, everything is automatically acceptable to A4, which means that contented is chopped disconnected for larger formats.

How tin I guarantee that the PDFs are ever printed successful the close format (A4 oregon A3)?
To marque matters worse, I don't cognize which format a PDF is successful earlier printing.

Many acknowledgment successful beforehand for your help!
Janik