Solution : https://service.sap.com/sap/support/notes/47502 (SAP Service marketplace login required)
Key words : 
additional key words scc0, allowed rfc wait time, require cross-client data, client xxx table yyy, error table definition usr01, error table definition xxx, background processes require memory, copy user master data, transport cross-client data, remote client copy terminates
Related Notes : 
       
| 116787 | CC-TOPIC: Remote client copy | 
| 116779 | CC-ERROR: 'Table definition M_DGMID is missing' | 
| 97497 | Memory Management Parameter (3.0/3.1) | 
| 68544 | Nt: R/3 Memory Management for Release 3.1X | 
| 67205 | CC-INFO: Copying large and productive clients | 
| 22514 | CC-INFO: Error analysis for client copy | 
| 20527 | Runtime error TSV_TNEW_PAGE_ALLOC_FAILED | 
| 20497 | CC-INFO: Long texts with a client copy |