Solution : https://service.sap.com/sap/support/notes/1252391 (SAP Service marketplace login required)
Key words : 
create bid submit bid upload data, excel accept bid update contract, /sapsrm/saplfm_bid select radio button, /sapsrm/backgroung_jobs_bid select radio button, srm core function modules, sap standard production program, enter message class bbp_bid, bid export data, background job report - mlen, select function group
Related Notes : 
       
| 1169088 | SRM 6.0 Performance Guide |