Solution : https://service.sap.com/sap/support/notes/325125 (SAP Service marketplace login required)
Key words : 
5===============import    reference  reference type  proposal  optional  referencepspnr_imp  proj-pspnrpspid_imp  proj-pspidrelease 4, function group cjwi administrative data  application, operative project definition required entry fields, action triggers online dump dynpro_msg_in_help, error message cj021  'wbs element &, reference type  default, operative work breakdown structure, additional key words va01, create function module  cjwi_update_actual_id, optional pass valuepspnr_imp
Related Notes : 
       
| 352832 | Settlement rule:termination for non-exist.settlement receivr |