Getting runtime Error 'UC_OBJECTS_NOT_CHARLIKE' for ALV grid

Question

Hi,
When I call method SET_TABLE_FOR_FIRST_DISPLAY of ALV I get runtime error 'UC_OBJECTS_NOT_CHARLIKE'.
Actually i have set in the fieldcatalog the field 'CHK' of internal table as checkbox.
wa_fcat-fieldname = 'CHK' .
wa_fcat-coltext = 'Clear' .
wa_fcat-seltext = 'Clear' .
wa_fcat-checkbox = 'X' .
wa_fcat-edit = 'X' .
APPEND wa_fcat to p_lt_fieldcatalog .
Field CHK is of type c.
when i dont set the field as checkbox, I stop getting the error.
Please find a solution.
regards,
auro

Answer 1

Relevant parts of code are:
Data Declaration:
types:  begin of tt_revenue_det,
       chk type c,
       budat like zefit0006-zefibudat,
       racct_txt like skat-txt50,
       amount like zefit0006-zefihsl,
       pbar_txt like tgsbt-gtext,
       sgtxt like zefit0006-zefisgtxt,
       costcentertxt like cskt-ktext,
       bar_txt like skat-txt50,
       doctype like zefit0006-zefiblart,
       ch_flag type c,
       end of tt_revenue_det,
data:    gt_revenue_det type table of tt_revenue_det.
FIELD CATALOG
*&      Form  set_fieldcatalog_rev_det
      text
     -->P_LT_FIELDCATALOG  text
form set_fieldcatalog_rev_det  using    p_lt_fieldcatalog type lvc_t_fcat.
data:wa_fcat type lvc_s_fcat.
wa_fcat-fieldname = 'P_GT_REVENUE_DET-CHK' .
wa_fcat-coltext = 'Clear' .
wa_fcat-seltext = 'Clear' .
wa_fcat-checkbox = 'X' .
wa_fcat-edit = 'X' .
APPEND wa_fcat to p_lt_fieldcatalog .
wa_fcat-fieldname = 'BUDAT' .
wa_fcat-coltext = 'Posting Date' .
wa_fcat-seltext = 'Posting Date' .
APPEND wa_fcat to p_lt_fieldcatalog .
wa_fcat-fieldname = 'RACCT_TXT' .
wa_fcat-coltext = 'Account Item Text' .
wa_fcat-seltext = 'Account Item Text' .
APPEND wa_fcat to p_lt_fieldcatalog .
wa_fcat-fieldname = 'AMOUNT' .
wa_fcat-coltext = 'Amount' .
wa_fcat-seltext = 'Amount' .
APPEND wa_fcat to p_lt_fieldcatalog .
wa_fcat-fieldname = 'PBAR_TXT' .
wa_fcat-coltext = 'Partner Business Area' .
wa_fcat-seltext = 'Partner Business Area' .
APPEND wa_fcat to p_lt_fieldcatalog .
wa_fcat-fieldname = 'SGTXT' .
wa_fcat-coltext = 'Item Text' .
wa_fcat-seltext = 'Item Text' .
APPEND wa_fcat to p_lt_fieldcatalog .
wa_fcat-fieldname = 'COSTCENTERTXT' .
wa_fcat-coltext = 'Cost Center' .
wa_fcat-seltext = 'Cost Center' .
APPEND wa_fcat to p_lt_fieldcatalog .
wa_fcat-fieldname = 'BAR_TXT' .
wa_fcat-coltext = 'Business Area' .
wa_fcat-seltext = 'Business Area' .
APPEND wa_fcat to p_lt_fieldcatalog .
wa_fcat-fieldname = 'DOCTYPE' .
wa_fcat-coltext = 'Type' .
wa_fcat-seltext = 'Type' .
APPEND wa_fcat to p_lt_fieldcatalog .
wa_fcat-fieldname = 'CH_FLAG' .
wa_fcat-coltext = 'Split' .
wa_fcat-seltext = 'Split' .
APPEND wa_fcat to p_lt_fieldcatalog .
endform.                    " set_fieldcatalog_rev_det
CREATE ALV
*&      Form  create_alv_revenue_det
      text
     -->P_GT_REVENUE_DET  text
form create_alv_revenue_det  using    p_gt_revenue_det.
ALV related data declaration
DATA: lf_layout TYPE lvc_s_layo,  "alv layout
      lt_fieldcatalog type table of lvc_s_fcat, "field catalog internal table
      wa_fieldcatalog type lvc_s_fcat. "work area for field catalog
create alv only if container is initial
IF G_CUSTOM_CONTAINER_REV_DET IS INITIAL.
lf_layout-no_toolbar = 'X'. " no toolbar
lf_layout-sel_mode = 'B'.
populate field catalog
perform set_fieldcatalog_rev_det using lt_fieldcatalog.
create instance of container class
    CREATE OBJECT G_CUSTOM_CONTAINER_REV_DET
           EXPORTING CONTAINER_NAME = G_CONTAINER_REV2.
create instance of alv grid class
    CREATE OBJECT GR_ALVGRID_REV_DET
           EXPORTING I_PARENT = G_CUSTOM_CONTAINER_REV_DET.
call method to display table in alv grid by passing layout and fieldcatalog
    CALL METHOD GR_ALVGRID_REV_DET->SET_TABLE_FOR_FIRST_DISPLAY
         EXPORTING
         is_layout = lf_layout
         CHANGING
         IT_OUTTAB        = p_gt_revenue_det
         IT_FIELDCATALOG  = lt_fieldcatalog.
  ENDIF.
endform.                    " create_alv_revenue_det