Solution : https://service.sap.com/sap/support/notes/137610 (SAP Service marketplace login required)
Key words :
transaction se37 -> interface change -> tables tabellen-parameter bezugsstruktur bezugstyp optional-------------------------------------------------------var_params varparmsvar_params1 vardr_k, sgrw_istsgrw_om sgrw_ps sgrw_pc sgrw_sl sgrw_pca sgrw_ec sgrw_lis, additional key words webreporting web www, optional table parameter var_params1, internet transaction server making, report writer report group, reference structure vardr_k, report writer report, affected report group, function group grwt
Related Notes :
| 313737 | Report Writer: Composite note 'WebReporting' |
| 182281 | Report Writer: Calling reports via ITS |