CYMK 0%

Also check that the Layer Options for all of the layers are all set to Print Layer. When Print Layer is uncheck the layer objects preview with Sep Preview off but are hidden when it is on.

https://forums.adobe.com/people/rob+day  wrote although, quite frankly, that is a nice but very technically obsolete late 20th century PDF/X standard At 2.3B in revenue, Ingram Group would be one of the largest printers in the country—there must be a reason for the X-1a requirement.

I actually interface with a number of print companies and print associations (both in North America and internationally) on behalf of Adobe.

There are printers who clearly understand modern PDF print publishing workflows and actually prefer PDF/X-4. We recommend you seek out such printers.

Many of the printers who claim they “require” PDF/X-1a actually will gladly take PDF/X-4 if they think you know what you are doing.

Other printers have told me straight out that they want PDF/X-1a with CMYK as handed down from Mt. Sinai and flattened transparency (and perhaps outlined text) because if something goes wrong, they want to blame the customer!  Hmmm, blame the customer when so many printer companies are experiencing continually shrinking revenues and going out of business? Great business strategy! They certainly aren't “print service providers.” It should be noted that many if not most of these “we only want CMYK” printers don't even specify which CMYK profile to convert RGB to — it certainly does make a hell of difference!

And then there are printers who simply are totally ignorant of color management entirely and are stuck in the 1980s and 1990s.

          - Dov