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select @@version;
(No column name)
Microsoft SQL Server 2019 (RTM) - 15.0.2000.5 (X64) Sep 24 2019 13:48:23 Copyright (C) 2019 Microsoft Corporation Express Edition (64-bit) on Windows Server 2019 Standard 10.0 <X64> (Build 17763: ) (Hypervisor)
 hidden batch(es)

SELECT * FROM sys.sql_feature_restrictions;
class object feature
 hidden batch(es)

EXEC sp_add_feature_restriction N'waitfoR', N'useR', N'_TestAppAccount';
Msg 16305 Level 16 State 0 Line 1 The database does not support feature restrictions.
 hidden batch(es)