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Generate PDF/A files Aspose.PDF for .NET - Cannot set AFRelationship tag; PDF/A3 output files fail zugferd/factur-x validation

We need for ASPose to allow us to set the AFRelationship tag in the FileSpecification. Without this capability, PDF/A3 files output from ASPose fail the European (France/Germany) standards for electronic invoices.

Background and sample code attached.

We recently purchased ASPose.PDF for .Net to add PDF/A3 and PDF digital signing capabilities to our ERP application. Our framework code communicates with SSRS to receive rendered PDF reports and then makes calls to ASPose to convert to PDF/A3 and attach structured XML files.

Our first area of dependence on ASPose is to generate einvoices for German/France markets. It’s working fine except for (as far as we can tell) 1 missing setting that causes
our generated files to fail validation by zugferd/factur-x validators.

I am attaching a sample C# application that can be used to demonstrate the issue.
EInvoice capability was the main reason we purchased ASPose so it’s very important for us to get a fix for this issue.


Thanks for contacting support.

I have observed your comments and like to inform that I have created investigation ticket with ID PDFNET-47752 in our issue tracking system to investigate and resolve this issue as soon possible.

Thanks. Please let us know status or any advice or suggested workarounds.


I like to inform this issue has been added recently in our issue tracking system and as per our company policy, the first priority for investigation is given to the Paid Support i.e. Enterprise and Priority Support on first come first serve basis. After that the issues from normal support forum are scheduled for investigation on first come first serve basis. I request for your patience and we will share good news with you soon.

Hello, any status about this issue?


I regret to inform that we do not have any updates regarding this issue. I request for your patience and we will share good news with you soon.