What does this mean?

You select the configuration option Set Migration to complete in the conversion of Accounting to SAP S/4HANA.

What does this mean? There are 3 correct answers to this question.

A. Customizing is consistent

B. All error messages have been accepted.

C. All views are generated successfully

D. Migration for logistics can begin

E. The previous year can be reopened

Answer: A,B,C