3428653 - WDA: GETWA_NOT_ASSIGNED Dump in CL_SALV_BS_LEX_FORMAT_XLSX====CP

There is a dump in ST22 with the following header data:

Category               ABAP programming error
Runtime Errors         GETWA_NOT_ASSIGNED
ABAP Program           CL_SALV_BS_LEX_FORMAT_XLSX====CP
Application Component  BC-WD-CMP-ALV-ABA

Exception condition "Field symbol has not been assigned yet." triggered

1) In the Source code part of the dump, the raising command can be seen in line 69 in the following code section:

         |   65|      lv_horizontal_alignment = cs_horizontal_alignment-general.                            
         |   66|    endif.                                                                                  
         |   67|                                                                                            
         |   68|    data(lv_cell_editor_type) = iv_cell_editor_type.                                        
         |>>>>>|    if <lv_internal_value> is initial.                                                      
         |   70|      if  (    if_salv_bs_lex_format~mv_initial_cell_type_bhvr =                            
         |    71|               if_salv_bs_lex_format=>cs_initial_cell_type_bhvr-default  

• Web Dynpro ABAP
• SAP NetWeaver
• ABAP PLATFORM - Application Server ABAP 

GETWA_NOT_ASSIGNED, CL_SALV_BS_LEX_FORMAT_XLSX====CP, Field symbol has not been assigned yet, Web Dynpro ALV, FPM List UIBB ATS, FPM Tree UIBB  , KBA , BC-WD-CMP-ALV-ABA , ALV for ABAP , Problem