Linking BSAK with EKBE

Question

Hello experts,
I am currently modifying a report where in I need to change some statements because it gets a PO's balance in table BSAK-wrbtr and instead I need to change it to EKBE-wrbtr. The problem is I don't know if there's a common field where I can link both tables.I have pasted below the code I am trying to modify. Also, How can I know if my report shows details of a PO correctly? where would I verify this? Thanks guys and take care!
SELECT augdt augbl shkzg dmbtr wrbtr FROM bsak
       INTO (bsak-augdt,bsak-augbl,bsak-shkzg,
             bsak-dmbtr,bsak-wrbtr)
         WHERE bukrs = bkpf-bukrs
               AND gjahr = bkpf-gjahr
               AND belnr = bkpf-belnr.
            IF bsak-shkzg = 'H'.
              bsak-dmbtr = - bsak-dmbtr.
              bsak-wrbtr = - bsak-wrbtr.
            ENDIF.
IF t_pohistory-currency <> 'PHP'.
IF bsak-augdt GT pa_augdt.
IF bsak-augdt IN so_augdt.
    t_amount-tramt = t_amount-tramt + bsak-wrbtr.
      ENDIF.
ELSE.
IF bsak-augdt GT pa_augdt.
  IF bsak-augdt IN so_augdt.
     t_amount-tramt = t_amount-tramt + bsak-dmbtr.
    ENDIF.
  ENDIF.
ENDSELECT.
ENDIF.

Answer 1

Hi viraylab,
phew! That's not immediate, but let's have a look at it:
1. first of all, take fields BSAK-BUKRS, BSAK-BELNR and BSAK-GJAHR and go to table BKPF.
2. then take field BKPF-AWKEY
3. then BKPF-AWKEY0(10) links to field EKBE-BELNR and BKPF-AWKEY10(4) to EKBE-GJAHR.
I hope it helps. BR,
Alvaro