Solution : https://service.sap.com/sap/support/notes/310302 (SAP Service marketplace login required)
Key words : 
'commissions -> commission account -> configuring reports -> maintain report types', call function 'zbsp_read_docse'exporting  s_program_name = 'saplzbsp_sample'  s_form_name    = 'accept_data', form accept_data tables pt_data structure zbsp_sis_docse, additional key words drilldown reporting, function module zbsp_read_docse generated, import parameter i_recherche = space, reversal line items correctly, create drilldown reports, reverse commission cases, reversal line items
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| 310744 | Collective note SAP Insurance 4.61 - Add-On SP 003 |