We are implementing MDG 1909 on S/4 HANA cloud single tenant edition. This is the first project I am working on MDG sitting on S/4 HANA cloud. As I understand in S/4 HANA, G/L Account and Cost Element are merged into one t-code from the backend. I have below Qs on how to create Primary and Secondary Cost Element through MDG UI in S/4 HANA 1909. Kindly help.
1) As G/L Account and Cost Element are merged into one tcode(FS00), should we only use "Financial Accounting Governance --> Create G/L Account Centrally" UI for creating both Primary and Secondary Cost Element ? If yes, then what is the purpose of having "Financial Controlling Governance --> Cost Element" UI, I am little confused seeing two UIs(one through Financial Accounting and other one through Financial Controlling).
2) As I understand that, G/L account will always be created in FI once we create any Primary Cost Element in CO. So, should I use "Financial Accounting Governance --> Create G/L Account Centrally" UI for creating G/L Account and Primary Cost Element both?
3) Should I use "Financial Controlling Governance --> Cost Element" for creating Secondary Cost Element? If yes, how will a G/L Account be created parallely in FI, after I create the Secondary Cost Element though this Financial Controlling UI in CO?
4) Which UI to use to create Hierarchies for Primary and Secondary Cost Element?
Kindly help me have the answers.