I have tried with your example and use case its work fine.
have you tried setting it as nullable as per the abp documentation itself
Can you explain in details and which document you can refer.
sorry, I should have been more clear in my initial repro steps: Steps to reproduce the issue:
See screenshot bellow, same one as the initial one, line 78, "<OrganizationStatus?>"
I'm not sure what exactly you mean by "which document you can refer", maybe the abp documentation itself if you click on the link.
Screenshot from the documentation below in which it's explained how to handle nullable Enums.
Thanks for the reply, have you tried setting it as nullable as per the abp documentation itself and similar with my example and use case?