Solution : https://service.sap.com/sap/support/notes/729696 (SAP Service marketplace login required)
Key words : 
terms crm service confirmation reason, spare part items, crm server, cancelled confirmations, incorrect period, local user, local date, system date, posting occurs, program error
Related Notes : 
       
| 743291 | CRM 4.0 SP Stack 6/2004 (SAPKU40006): Release & Info. Note | 
| 606817 |