On which documents can customers perform a budget check in SAP Ariba buYING AND Invoicing Integration via CIG?

Which HR infotypes are referred to for the Ariba user master data extract? Note: There are 3 correct answers to this question.

Which interfaces should you select for the ERP-initiated purchase requisition feature while executing the interface Setup program in SAP Ariba Procurement Integration Configuration. Note: There are 2 correct answers to this question.

Which incremental master data objects need Maintain Date Time Stamp configuration for integration using MDTS?
Note: There are 3 correct answers to this question.

Which interface do customers need to configure in the Interface Setup program to enable demand aggregation of purchase Requisitions.