@Vadim Gurevich
Thank you for your post and I apologize for the delayed response!
I spoke with one of our provisioning PMs and you're on the right track. You'll have to submit a request via the Microsoft Application Network portal. Details around submitting an app are located here - Publish your app to the Azure Active Directory app gallery | Microsoft Learn
If you have any other questions, please let me know.
Thank you for your time and patience throughout this issue.
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