Solution : https://service.sap.com/sap/support/notes/306087 (SAP Service marketplace login required)
Key words :
additional key words variation variation hierarchy navigation bar, sgrw_docu_cons_notesgrw_om sgrw_ps sgrw_pc sgrw_sl sgrw_pca sgrw_ec sgrw_lis, total level ----- supportguide 20010207184721 -----reportwriter, include directly assigned values, indicator rgsmh-xsingleval, rgsmh-xsingleval = 'x', directly assign values, basic set b2, basic set b3, +-- basic set b2
Related Notes :
513287 | Sets with directly assigned values |
353607 | Composite note 'Navigation bar' |
304105 | Report Writer: Incorrect variation hierarchy |