Thanks for your response.
However the question is not related to Trim or Crop marks. When you check the PITSTOP log report for the selected PDF file, the details are listed in the "Page Boxes" menu as mentioned below:-
Page box Defined size Effective size
Media box (M) 241.30 x 301.62 mm 241.30 x 301.62 mm
Crop box (C) 241.30 x 301.62 mm 241.30 x 301.62 mm
Trim box (T) 215.90 x 276.22 mm 215.90 x 276.22 mm
Bleed box (B) 218.90 x 301.62 mm 218.90 x 301.62 mm
Art box (A) not defined 241.30 x 301.62 mm
As mentioned above the Art box was not defined in the InDesign PDF file.
Sure, Indesign didn't define an Art Box but it still had one.... Art boxes seem to come from Illustrator which is very flaky in it's handling of trim/crop boxes in general IMO.
More to the point, why do you need one, and what problem is it creating for you not having a defined one?
One of our printer requires this info in PDF file. Here are the printer feedback for your reference:
To meet our manufacturing requirements for this specific documents trim size all files should have the media, art, bleed and crop boxes set as 8.375 x 11.125, with a -0.125” offset from the Trim box position on all sides.
This is a bit off-topic, and If I recall correctly, early versions of Quark 7 had an issue where exported PDFs had a bug where the trim box was oddly smaller than the page size. This would go unnoticed until the PDF was added to an imposition program, where the incorrect trim box would prevent complete trapping.
Hence the printer requirement. It was fixed by an update at some point.