JOINING ISSUE

HI EXPERTS I TRY TO JOIN 3 TABLES BUT ERROR SHOWS THAT WRONG TABLE AME OR ALIAS TABLE. PLEASE HELP ME ON THAT

SELECT A~bukrs
             B~ebeln
             B~bukrs
             B~bstyp
             B~BSART
             B~lifnr
             B~ekorg
             B~bedat
             C~ebeln
             C~ebelp
             C~txz01
             C~matnr
             C~elikz
             C~erekz
             C~knttp
          INTO CORRESPONDING FIELDS OF TABLE  it_tab                
          FROM  T001 AS A
          INNER JOIN EKKO AS B ON  A~bukrs = B~bukrs  where  a~bukrs in s_bukrs
          INNER JOIN EKPO AS C ON  C~ebeln = C~ebeln  where  b~ekorg in s_ekorg
                                                       and   b~bstyp in s_BSTYP
                                                       and   b~BSART in s_BSART
                                                       and   b~ebeln  IN s_ebeln
                                                       and   b~lifnr in s_lifnr
                                                       and   b~bedat in s_bedat.