SuccessFactors Employee Central ----->> HCM
增强点 ES_PAOCF_EC_TOOLS
HCM ----->> SuccessFactors Employee Central
增强点 ES_ECPAO_EMP_DATA_EXTRACT_OUT
https://blogs.sap.com/2015/11/04/employee-central-sap-erp-hcm-prepackaged-integration-how-to-change-the-standard-field-mapping/
http://help.sap.com/hr_ecintegration/
