Msg 15138, Level 16, State 1, Line 7 The database principal owns a schema in the database, and cannot be dropped.
SELECT SCHEMA_NAME,
SCHEMA_OWNER
FROM INFORMATION_SCHEMA.schemata
WHERE SCHEMA_OWNER = 'USERNAME';
--mi arreglo--
alter authorization on schema::db_ddladmin TO dbo;
alter authorization on schema::db_owner TO dbo;
posterior a eso puedo borrar y crear el usuario con problema
