Solution : https://service.sap.com/sap/support/notes/574189 (SAP Service marketplace login required)
Key words :
reference type = project_idparameter = area, reference type = iwbarea-area, reference type = flagparameter = folder_loios, reference type = sdokobjectsafter, select class cl_sa_tab_docu, parameter tab index, = 'iwbsolar'parameter = create_folder, terms folder reason, type = importing, type = exporting