Error Message - "The Document contains pdf Objects that have been reinterpreted"

[R K]

Hi Everyone, Please help 

I created and saved a file in Adobe Illustrator CC 23.0.1

My printing vendor is unable to open the ai file I sent him and the error keeps repeating - "The Document contains pdf Objects that have been reinterpreted"

Can somebody please help?

Many Thanks

RK

[Monika Gause]

Does that also happen when they open the PDF with Adobe Acrobat?

[R K]

Nope! The pdf is opening just fine. Just the error message that keeps coming (Please refer to the attached screenshots) Thank you ))

[Monika Gause]

The error message is caused by the PDF application. And there's nothing Illustrator can do to prevent it.

What is in the file - because the error message itself doesn't tell us anything. Please show a screenshot. And if there are images embedded, tell us their specifications.