Using ABAP fuction “Z_GET_EOH_VALUE”, we can get Begining Stock, Begining AMT, Ending Stock, Ending AMT.

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*Ending Stock & AMT
 
DATA: WA_EOH LIKE MBEWH.
*If ther is no To(From~To)
IF P_MONAT-HIGH = ‘00′.
P_MONAT-HIGH = P_MONAT-LOW.
ENDIF.
LOOP AT IT_MAIN.
CALL FUNCTION ‘Z_GET_EOH_VALUE’
EXPORTING
matnr         = it_main-matnr
bwkey         = it_main-werks
lfgja         = p_gjahr
lfmon         = p_monat-high
IMPORTING
eoh           = wa_eoh.
IF sy-subrc = 0.
it_main-LLBKUM = wa_eoh-lbkum.
it_main-LSALK3 = wa_eoh-SALK3.
ENDIF.
*Beginning Stock and AMT
CLEAR WA_EOH.
DATA: [...]