The recommended way to summarize the cash accounts into SAP S/4HANA Finance for group reporting is to map all 10 cash G/L accounts to one Financial Statement (FS) item. This allows the system to aggregate the balances of these accounts into a single FS item, simplifying the reporting process.

the SAP Group Reporting Data Collection mappings are based on data collection configuration tables2.

The SAP Group Reporting Data Collection mappings are based on data collection configuration tables. These tables store the mapping rules and definitions that enable the system to import data from various data sources into the SAP Group Reporting Data Collection system. (Reference: https://help.sap.com/viewer/0fa84c9d9c634132a6c3d6f3508c54a3/1809.002/en-US/0b3dbd7c264b62a7e2d2a1e7d31fbc.html)

According to the SAP S/4HANA Finance for Group Reporting Associates documents1, a fiscal year variant is a required global parameter that must be selected when creating a new consolidation scenario. A fiscal year variant defines the number and length of posting periods and special periods for a fiscal year. A fiscal year variant can be assigned to one or more consolidation scenarios.

You cannot release data if company codes are not mapped to consolidation units or if the period is closed in group reporting. Both of these conditions prevent the release of data for consolidation.

In a reporting rule, a report item can be assigned to subitems and FS (Financial Statement) items. Subitems are used to provide more detailed information or breakdowns of the FS items, while FS items represent the main line items in the financial statements.

When running intercompany reports from a legal perspective, the "Company code" dimensional hierarchy should be selected. This is because company codes represent the legal entities within the organization and are the basis for external financial reporting.

In SAP Group Reporting Data Collection forms, the possible period mode is Periodic, which represents monthly, quarterly, or yearly periods.