Subba Reddi Tummuru

@peterjkrebs : Could you please help to resolve above issue

As a temporary fix, Increased data source limit to 2000

Thank you for adding roadmap information.

Can you try deleting respective user's favorite DLs from database manually and then ask to add new one from app.

Can you try by deploying with base resource name **lower case**. If still issue exists, would require to check application insights logs.

Try by creating app registration in demo tenant