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https://issues.apache.org/jira/browse/PDFBOX-4433?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16747019#comment-16747019
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Tilman Hausherr commented on PDFBOX-4433:
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[~osman.s.aktepe] please tell whether the link provided by [~mkl] helps you.
Also make sure you're using the latest version, there were bugs related to
signing several times.
What do you mean with "{color:#333333}I want to change some fields which have
their own signatures{color}" - do you mean you want to replace a signature
field?
> PDF Form updating while signing
> -------------------------------
>
> Key: PDFBOX-4433
> URL: https://issues.apache.org/jira/browse/PDFBOX-4433
> Project: PDFBox
> Issue Type: Task
> Components: Signing
> Reporter: Osman
> Priority: Major
> Labels: how-to
>
> Hi All,
> Actually I wanted to ask a question, I could not find the appropriate place
> to ask. If there is a more appropriate place, please forward me.
> My question is that I want to sign documents in a sequence but between
> signings, I want to change some fields which have their own signatures. It is
> supported by PDF and until now I always used PDFBox but I could not achieve
> it.
> Whenever I sign a document and change a field and sign again, previous
> signature becomes invalid.
> How can I solve this problem?
> Regards
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