What are some of the required configurations for integration of an external HRIS with SAP successfactors onboarding? Note: There are 3 correct answers to this question

What are some of the required configurations for integration of an external HRIS with SAP successfactors onboarding? Note: There are 3 correct answers to this question
A . Create an export of new hire data using only middleware system
B. Configure all the event reasons
C. Create an export of new hire data using integration center or odata apis
D. Import employee data using integration center or odata apis
E. Configure the onboarding data model

Answer: B,D,E