不允许在用户定义的例程、触发器或聚合内回滚事务，因为事务不是在该 CLR 级别内启动的。请更改应用程序逻辑以强制实施严格的事务嵌套。

Transaction is not allowed to roll back inside a user defined routine, trigger or aggregate because the transaction is not started in that CLR level. Change application logic to enforce strict transaction nesting.