Error when trying to use field ProjectVisibility field of view I_EngagementProject to create a custom CDS view

When I am creating a custom CDS view and try to fetch the data by a GET call of this CDS view I am getting errors like:

"In the context of Data Services an unknown internal server error occurred"

Property 'ProjectVisibility' has invalid value 'N'.

What is the cause of this issue and how can this be solved?