collect
 

Buena tarde,
estoy tratando de sumar con collect, pero no suma como debe,
anexo codigo, podrian decirme que hago mal.

LOOP AT pt_mara into ls_mara.
ls_inventario-matnr = ls_mara-matnr.
ls_inventario-labst = ls_mara-labst.
ls_inventario-insme = ls_mara-insme.
ls_inventario-umlme = ls_mara-umlme.
ls_inventario-speme = ls_mara-speme.
ls_inventario-retme = ls_mara-retme.
READ TABLE pt_makt INTO ls_makt
WITH KEY matnr = ls_mara-matnr.
if sy-subrc IS INITIAL.
ls_inventario-maktx = ls_makt-maktx.
ENDIF.
CLEAR ls_makt.
READ TABLE pt_mdpb INTO ls_mdpb
WITH KEY matnr = ls_mara-matnr.
if sy-subrc IS INITIAL.
ls_inventario-plnmg = ls_mdpb-plnmg.
ENDIF.
CLEAR ls_mdpb.
READ TABLE pt_mdpb1 INTO ls_mdpb1
WITH KEY matnr = ls_mara-matnr.
if sy-subrc IS INITIAL.
ls_inventario-forem1 = ls_mdpb1-plnmg.
ENDIF.
CLEAR ls_mdpb.
if ls_inventario-plnmg = 0.
ls_inventario-cobertura = 0.
else.
ls_inventario-cobertura = ( ls_inventario-labst / ls_inventario-plnmg ) * 20.
ENDIF.

READ TABLE pt_vbrk INTO ls_vbrk
WITH KEY matnr = ls_mara-matnr.
if sy-subrc IS INITIAL.
LOOP AT pt_vbrk into ls_vbrk." INTO ls_vbrk.
COLLECT ls_vbrk into pt_vbrk1.

ENDLOOP.
gracias.

collect
 

Recuerda que en el collect todos los campos de texto a agrupar deberian ser iguales, por ahí alguno debe estar diferente

Saludos! :D