Please create PDF files conforming to PDF/1A-b standard while following the Guidelines below.
【Web】2.2 Guidelines for Creation of PDF Files
If the PDF does not follow the guidelines, the registration error or the displaying error may have occurred.
It is possible to convert the PDF file to standard-compliant one by using the Preflight on Adobe Acrobat.
■ How to convert the PDF file to be PDF/1A-b standard-compliant
It only introduces that how to create a pdf file in compliance with PDF/A-1b on Adobe Acrobat, by following its current user interface as of April 15th 2021, and not meant to guarantee the operation.
Step 1. Choose View > Tools > Print Production > Open .
Step 2. On the right tool panel, click Preflight.
Step 3. Double-click "Convert to PDF/A1-b" on the PDF/1A list.
Step 4. Please select the folder for saving.
Step 5. When it completed, the converted pdf file have been exported.