PDF backgorund is omitted when validate signature.

[Former Community Member]

Hi All,

I'm applying a background to PDF using this DDX:

<?xml version="1.0" encoding="UTF-8"?>

<DDX xmlns="http://ns.adobe.com/DDX/1.0/">

     <PDF result="out.pdf">

      <PDF source="doc2.source">

            <Watermark   verticalAnchor="Top"  >

                   <PDF source="background"  />

             </Watermark>

</PDF>

</PDF>

</DDX>

After the creation this document is digitally signed in Acrobat.

Then, If I using "View Signed PDF" option in Acrobat I see the document without the background.

Am I missing something while creating the document? What is wrong?

Thanks,

Yan.