Preflight fail - Object Compression

[juliec18822248]

I'm trying to run a print preflight on a PDF document I made in InDesign but am getting a red X fail with this error: 

I don't know what it means or how to fix it. What have I done wrong and does this mean my document cannot go to print? How must I adjust my document to make it print-ready?

Thanks

[Test Screen Name]

It says it’s a warning, why do you say it’s a fail? Did it not make the file?

[juliec18822248]

I thought the red x means it fails? Yes, it did make the PDF file.

[Test Screen Name]

I’ve read the message carefully and, while I know the technical stuff it’s talking about, I have no idea why it’s even a warning. Just part of the job. But it isn’t even needed for PDF/X-4. Very odd. 

[juliec18822248]

OK, thank you.

[JR Boulay]

I think the same thing as Test_Screen_Name: do not worry about it.
This is a warning of potential compatibility with certain ISO standards, not a technical problem.

[juliec18822248]

Thanks.