Which maintenance options are available?

You have a multi connected system setup. Your SAP S/4HANA Cloud system acts as a central (hub) system and various SAP ERP systems are connected to it. Your business requires to apply mass changes to your central contracts and distribute to the connected systems.

Which maintenance options are available? Note: There are 2 correct answers to this question.
A . You can apply mass changes to your central contracts using the Mass Changes to Purchase Contracts app
B . You can apply mass changes to fields at header and item level in central contracts
C . You can apply mass changes to your central contracts using the Manage Central Purchase Contracts app
D . You can add new items to existing central contracts using Microsoft Excel

Answer: A, D