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Form checksum

We have a few forms that have in their xml a checksum:
<?xml version="1.0" encoding="UTF-8" standalone="yes"?>
<form checksum="71hpgli6uJKa9YT8hkYhTpB2qbQ=" xmlns="http://www.xfa.org/schema/xfa-form/2.8/">
When we insert new data in this xml and import the xml into the PDF, data is not imported, most probably because the checksum is no longer valid.
Can you please tell how this checksum is calculated, in order to recalculate it? (seems to be a sha1 algorithm)
It is not a barcode checksum, there is no such field in the form.


To ensure a timely and accurate response, please attach the following resources here for testing:

  • Your input PDF and XML documents.
  • Please attach the output PDF file that shows the undesired behavior.
  • Please attach the expected output PDF file that shows the desired behavior.
  • Please create a standalone console application (source code without compilation errors) that helps us to reproduce your problem on our end and attach it here for testing.

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