HR Broker Business: Employee Reference Check, Recommendation of Quality Vender, Assessment Center, out-placement of employees as a result of company restructure.
人力资源经纪业务：员工履历调查、优质供应商推荐、职业能力测评、被裁员工第三方安置；
Check that all employee IDs in the incoming XML document exist in the reference data set.
检查传入的XML文档中的所有雇员ID是否都在引用数据集中。
Check that at least one employee with the current id exists in the reference variable to assert that the employee number is valid.
检查是否至少有一个具有当前ID的雇员在reference变量中，以断言该雇员号是有效的。
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