Which of the following options are recommended when it comes to uniquely identifying contacts?

You want to update your contact database .

Which of the following options are recommended when it comes to uniquely identifying contacts? Note: There are 3 correct Answer to this question.
A . Use date of birth.
B. Use email address.
C. Use first name and last name.
D. Use an external ID.
E. Use an SAP Emarsys Customer Engagement internal ID.

View Answer

Answer: B,D,E