What field is part of a consolidation group master data record?

What are the required settings for the elimination of intercompany profit in inventory method?
Note: There are 2 correct answers to this question.

You have 2 records in acdoca with cost center A and 2 records with cost center B. All 4 records are for the same legal entity:

Cost center is set to aggregate in SAP S/4HANA Finance for group reporting.
What happens to the cost center field in group reporting when the data is released?

Which period mode is possible in SAP Group Reporting Data Collection forms?

What are the SAP Group Reporting Data Collection mappings based on?