TABLE OF CONTENTS
PDF Compatibility (PDF/X-4)
The PDF, or portable document format, is one of the most commonly used document formats. PDF/X is commonly used by graphic designers and print professionals, this PDF file type is designed to better support graphics when sharing and printing. Based on International Organisation for Standardisation (ISO) standards, this format will have a set of rules and restrictions for its export settings. These will be flagged during pre-flight if the file you have submitted does not meet the standard's conditions.
Any issues with the PDF Standard (PDF/X-4) are flagged in the pre-flight report as the following errors:
PDF/X-4 entry missing or incorrect
XMP does not have a RenditionClass entry in the XMP Media Management Schema
XMP does not have “title” entry in the Dublin Core Schema
XMP does not have a VersionID entry in the XMP Media Management Schema
PDF/X entry in Document info present (must only be present in XMP metadata)
PDF/X version key missing
Trapped key not present in XMP metadata
Fixing the PDF Standard on InDesign (PDF/X-4)
To fix these errors, please ensure that the PDF Standard is set to PDF/X-4:2010 when you export from InDesign: