Solution : https://service.sap.com/sap/support/notes/169843 (SAP Service marketplace login required)
Key words :
additional key words gr32 summation level sum_from sum_to t801m gr446 ----- supportguide 20010330131459 -----reportwriter, sgrw_messagesgrw_om sgrw_ps sgrw_pc sgrw_sl sgrw_pca sgrw_ec sgrw_lis, error message gr446, local summation levels, -summation level, entered local, program error, row blocks, processed correctly, report maintenance
Related Notes :
316291 | Report Writer: Collective note 'summation levels' |