As of SAP Web AS 6.40 (or SAP Web AS 6.20 Support Package 44), the synchronization objects BC_BC_ADDR_REGSTRUC_PART_1 and BC_BC_ADDR_REGSTRUC_PART_2, required for initial distribution or automatic Customizing distribution, are delivered for the SAP Regional Structure. You can use initial distribution if a system in your system landscape contains these synchronization objects, which can then be loaded by the Solution Manager. Call the transaction SCDT_MAPPING to maintain synchronization objects.
Automatic Customizing distribution for distributing changes is possible only from SAP Web AS 6.40 (or SAP Web AS 6.20 Support Package 44) because the required functional enhancements in the transactions SR10, SR11, SR12, SR20, SR21, SR22, SR30, SR31 and SR32 exist only in this release.
As of SAP Web AS 4.6C, any system can be a target system for initial distribution. Target systems with lower releases are not supported by the SAP Solution Manager. For more information, see SAP note 552457.
As of SAP Web AS 4.6B, any system can be a source system for initial distribution. Source systems with lower releases are not supported by the SAP Solution Manager because they do not contain the necessary difference tables.