Inner Join "OR"-Statement scheint nicht zu funktionieren.

Code: Alles auswählen.

PARAMETERS: 
pa_abgrs TYPE vbap-abgrs DEFAULT 'YV0001',  
pa_kokrs TYPE kokrs OBLIGATORY DEFAULT '0002',
pa_monat TYPE bis_abgr_m OBLIGATORY,
pa_gjahr TYPE bis_abgr_j OBLIGATORY.

DATA:   hlp_datum          TYPE sy-datum. 
CONSTANTS: comp_nine(20) TYPE c VALUE '09182736455463728190'.

TYPES: BEGIN OF t_tkkaz_tkkar,
             kateg TYPE kategorie,
             zlnid TYPE dzeilen_id,
             koamk TYPE kstar_mask,          " Kostenart
             zidap TYPE dzeilen_id,          " Zeilen-ID akt.pflichtig
             zidnf TYPE dzlnid_naf,          " Zeilen-ID nicht akt.pfl.
             nafpz TYPE naf_prz,             " nicht akt.f.%-Satz
           END OF t_tkkaz_tkkar.
    DATA: lt_tkkaz_tkkar TYPE TABLE OF t_tkkaz_tkkar.

  CONCATENATE pa_gjahr pa_gjahr INTO hlp_datum.
  TRANSLATE hlp_datum USING comp_nine.

   SELECT tkkar~kateg tkkar~zlnid tkkaz~koamk tkkaz~zidap tkkaz~zidnf       
            tkkaz~nafpz
      FROM tkkar
      INNER JOIN tkkaz
      ON  tkkaz~zidnf = tkkar~zlnid
[b]      OR  tkkaz~zidap = tkkar~zlnid[/b]
      INTO TABLE lt_tkkaz_tkkar
      WHERE  tkkar~kokrs  = pa_kokrs
      AND    tkkar~versa  = '000'        
      AND    tkkar~abgsl  = pa_abgrs
      AND  ( tkkar~kateg  = 'E'         
      OR     tkkar~kateg  = 'K' )       
      AND   tkkaz~kokrs  = pa_kokrs
      AND    tkkaz~versa  = '000'
      AND    tkkaz~abgsl  = pa_abgrs.
      AND    tkkaz~zglab  GE hlp_datum.

IF sy-subrc = 0.
cl_demo_output=>display( lt_tkkaz_tkkar )
ENDIf.