Beta: `ODataUnrecognizedPathException` for `/roleManagement/exchange/roleAssignments/{unifiedRoleAssignment-id}/directoryScope`

It seems that metadata for beta contains definitions for endpoints that are not present.

I have a role assignment for Exchange Online provider with a specific directory scope, but the client generated from metadata for beta endpoint throws Microsoft.OData.UriParser.ODataUnrecognizedPathException

{
    "error": {
        "code": "UnknownError",
        "message": "Microsoft.OData.UriParser.ODataUnrecognizedPathException: Resource not found for the segment 'directoryScope'.   at Microsoft.OData.UriParser.ODataPathParser.CreateDynamicPathSegment(ODataPathSegment previous, String identifier, String parenthesisExpression)   at Microsoft.OData.UriParser.ODataPathParser.CreateNextSegment(String text)   at Microsoft.OData.UriParser.ODataPathParser.ParsePath(ICollection`1 segments)   at Microsoft.OData.UriParser.ODataPathFactory.BindPath(ICollection`1 segments, ODataUriParserConfiguration configuration)   at Microsoft.OData.UriParser.ODataUriParser.Initialize()   at Microsoft.Exchange.Admin.OData.Core.Handlers.RequestHandler.DeriveEntityFromQueryString()   at Microsoft.Exchange.Admin.OData.Core.Handlers.RequestHandler..ctor(ODataContext dataContext, Func`2 shouldSkipExceptionHandlingDelegate)   at Microsoft.Exchange.Admin.Library.BetaHttpHandler.ProcessRequest(HttpContext context)",
        "innerError": {
            "date": "2023-11-23T13:38:28",
            "request-id": "c0ad0750-383d-4de0-bac5-17ad80d6c03c",
            "client-request-id": "4fa91ad7-121d-ede1-43c3-42437af6fe49"
        }
    }
}

Happening when client calls GET /roleManagement/exchange/roleAssignments/{unifiedRoleAssignment-id}/directoryScope

Similar for

GET /roleManagement/exchange/roleAssignments/{unifiedRoleAssignment-id}/principal
GET /roleManagement/exchange/transitiveRoleAssignments

Start by comparing the beta metadata definitions with the reported Exchange role-management paths: directoryScope, principal, and transitiveRoleAssignments. Confirm whether these paths are advertised despite being unavailable, then verify that the metadata and the corresponding service behavior agree.