Solution : https://service.sap.com/sap/support/notes/451573 (SAP Service marketplace login required)
Key words : 
extra fetch attributes reason, terms nkey transaction, create program zexftch_data_shift_program, nkey transaction fails, systemsof earlier releases, extra fetch, earlier releases, report program, keygen fails, symptom modification
Related Notes : 
       
| 547705 | SAPKU31001: Support Package 01 for CRM 3.1 | 
| 442332 | SAPKU30006: Support Package 6 for EBP 3.0/CRM 3.0 | 
| 396690 | SAP CRM 3.0: Information on Upgrade |