Solution : https://service.sap.com/sap/support/notes/1293492 (SAP Service marketplace login required)
Key words : 
overlooks user personalization values, program error solution implement, attached correction instruction, item table, business object, visible rows, performance reason, support packages, get_item_window, prerequisites
Related Notes : 
       
| 1266771 | SRM 7.0 Performance Guide |