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

Hello, I update my Aspose library to 21.1.0 version and still having this issue. Now I am able to set the AFRelationship in code but the converted PDF is not passing the facture-x validators anyway

Here is a console application to demonstrate this issue, it convert a PDF to a PDF/A-3 with the facture-x standards.
https://epicor-my.sharepoint.com/:u:/p/daniel_vazquez/ERCDtZ-1w2ZHrnMZzpZ_4bMBux54qQLTd5vYowd9FLr-eQ?e=pzKdaN

Link for the facture-x validator (free but need registration):
https://services.fnfe-mpe.org/account/home

@EpicorSoftware

We faced access issues on the link that you have shared for sample project. Would you please try using the latest version i.e. 21.6 and let us know in case you still notice any issue by sharing a link that is accessible for download? We will test the scenario in our environment and address it accordingly.

Here is a new link (Expires march 25, 2023)
[ConvertToPdfA3FactureXV3.zip](https://epicor-my.sharepoint.com/:u:/p/daniel_vazquez/ERWiV13bTyRDg84rOra10BABA-rm3NZsNe2qadURatW6Bw?e=xQb4bx)

ARFormFactureX.pdf (271.1 KB)

@EpicorSoftware

Can you please check the attached file generated at our end using 22.9 version of the API? In case you still find some issues in it, please share a screenshot of compliance test results.