Solution : https://service.sap.com/sap/support/notes/91096 (SAP Service marketplace login required)
Key words : 
complex customizing environments expansion phase 1, additional key words scmp, standard table maintenance sm30, customizing cross system compare, call report rstbserv internally, supporting customizing comparison   ==============valid, comparison/adjustment tools exist, execute complex works, comparing large datasets, abap report rstabcmp
Related Notes : 
       
| 808111 | ESS/MSS: Changes in Self-Service Homepage causes errors | 
| 710486 | CHM: Channel documents disappear from partner portal | 
| 544926 | Hungaria: Statutory requirements 2001 | 
| 310866 | CC-INFO: Obsolete reports not deleted | 
| 217012 | Missing pricing Customzing after upgrade | 
| 204693 | Missing countries in Customizing (table T005) | 
| 162594 | Missing Customizing entries | 
| 132247 | Table entries, forms, schemas, and rules in HRSPs. | 
| 102790 | Table comparison: RSTABCMP (error, prel. version) | 
| 85087 | Table comparison: Error, terminations, handling | 
| 63805 | FAQ: Country-specific Customizing settings | 
| 43212 | CC-TOPIC: Export logs in SCC3 | 
| 22514 | CC-INFO: Error analysis for client copy | 
| 18611 | Table evaluation (OY19, RSTBSERV): quest. problem |