Merge into error : ORA-00904 invalid identifier

MERGE INTO DMADMIN.ARS_P0DETHST_DUP_TEST_FACT T
USING      DMADMIN.ARS_P0INVHST_DUP_TEST      S
ON (    t.company        = s.company
    and t.division       = s.division
    and t.vendor         = s.vendor
    and t.invoice_number = s.invoice_number)
WHEN MATCHED THEN
UPDATE SET
        t.COMPANY   = s.COMPANY         ,
  t.DIVISION        =s.DIVISION   ,
  --t.REGION_1        =s.REGION_1   ,
  --t.REGION_2        =s.REGION_2   ,
  --t.INVOICE_LINE_NUM=s.INVOICE_LINE_NUM   ,
  t.VENDOR          =s.VENDOR   ,
  t.INVOICE_NUMBER  =s.INVOICE_NUMBER   ,
  t.INVOICE_MONTH   =s.INVOICE_MONTH   ,
  t.INVOICE_DAY     =s.INVOICE_DAY   ,
  t.INVOICE_CENTURY =s.INVOICE_CENTURY   ,
  t.INVOICE_YEAR    =s.INVOICE_YEAR   ,
  t.DUE_MONTH       =s.DUE_MONTH   ,
  t.DUE_DAY         =s.DUE_DAY   ,
  t.DUE_CENTURY     =s.DUE_CENTURY   ,
  t.DUE_YEAR        =s.DUE_YEAR   ,
  t.PO_NUMBER       =s.PO_NUMBER   ,
  --t.PO_LINE_NUM     =s.PO_LINE_NUM   ,
  --t.PRODUCT_GROUP_NUM =s.PRODUCT_GROUP_NUM  ,
  --t.PRODUCT_NUM      =s.PRODUCT_NUM  ,
  --t.GL_NUM           =s.GL_NUM  ,
  --t.GL_BRANCH_NUM    =s.GL_BRANCH_NUM  ,
  --t.GL_DEPARTMENT_NUM =s.GL_DEPARTMENT_NUM ,
  --t.ADDL_CHARGE       =s.ADDL_CHARGE ,
  --t.QUANTITY          =s.QUANTITY ,
  --t.PRICE             =s.PRICE ,
  t.GROSS_AMOUNT      =s.GROSS_AMOUNT ,
  t.MEXICO_ORIG_AMT   =s.MEXICO_ORIG_AMT ,
  t.FREIGHT           =s.FREIGHT ,
  --t.WAREHOUSE_NUM     =s.WAREHOUSE_NUM ,
  --t.ASSET_NUM         =s.ASSET_NUM ,
  --t.AFE_NUM           =s.AFE_NUM ,
  t.TRANSACTION_CODE  =s.TRANSACTION_CODE,
  t.ACCOUNT_TYPE      =s.ACCOUNT_TYPE ,
  t.BATCH_NUMBER      =s.BATCH_NUMBER ,
  t.REFERENCE_NUMBER  =s.REFERENCE_NUMBER ,
  t.PE_MONTH          =s.PE_MONTH ,
  t.PE_CENTURY        =s.PE_CENTURY ,
  t.PE_YEAR           =s.PE_YEAR  ,
  t.YYMMDD_OF_UPDATE  =s.DATE_STAMP ,
  t.TIME_OF_UPDATE    =s.TIME_STAMP ,
  t.USER_ID           =s.USERNAME ,
  t.CHECK_NUMBER      =s.CHECK_NUMBER ,
  t.CHECK_MONTH       =s.CHECK_MONTH ,
  t.CHECK_DAY         =s.CHECK_DAY ,
  t.CHECK_CENTURY     =s.CHECK_CENTURY ,
  t.CHECK_YEAR        =s.CHECK_YEAR ,
  t.CHECK_STATUS      =s.STATUS_CODE ,
  t.CHECK_CODE        =s.CHECK_CODE ,
  t.ARS_ID            =s.ARS_ID ,
  t.DATE_ADDED        =s.DATE_ADDED ,
  t.TIME_ADDED        =s.TIME_ADDED ,
  t.USER_ADDED        =s.USER_ADDED ,
  t.PROG_NAME         =s.PROG_NAME ,
  t.DATE_CHGD         =s.DATE_CHGD ,
  t.TIME_CHGD         =s.TIME_CHGD ,
  t.USER_CHGD         =s.USER_CHGD ,
  t.PROG_NAME2        =s.PROG_NAME2,        
    t.INVOICE_DESCR   =s.INVOICE_DESCR  ,
    t.ENTERED_MONTH   =s.ENTERED_MONTH  ,
    t.ENTERED_DAY     =s.ENTERED_DAY  ,
    t.ENTERED_CENTURY =s.ENTERED_CENTURY  ,
    t.ENTERED_YEAR    =s.ENTERED_YEAR  ,
    t.DISCOUNT        =s.DISCOUNT  ,
    t.MEXICO_IVA      =s.MEXICO_IVA  ,
    t.SPECIAL_HANDLING=s.SPECIAL_HANDLING  ,
    t.MEMO_REF_NUM    =s.MEMO_REF_NUM  
    
WHEN NOT MATCHED THEN
INSERT (t.COMPANY            ,
  t.DIVISION           ,
  t.REGION_1           ,
  t.REGION_2           ,
  t.INVOICE_LINE_NUM   ,
  t.VENDOR             ,
  t.INVOICE_NUMBER     ,
  t.INVOICE_MONTH      ,
  t.INVOICE_DAY        ,
  t.INVOICE_CENTURY    ,
  t.INVOICE_YEAR       ,
  t.DUE_MONTH          ,
  t.DUE_DAY            ,
  t.DUE_CENTURY        ,
  t.DUE_YEAR           ,
  t.PO_NUMBER          ,
  t.PO_LINE_NUM        ,
  t.PRODUCT_GROUP_NUM  ,
  t.PRODUCT_NUM        ,
  t.GL_NUM             ,
  t.GL_BRANCH_NUM      ,
  t.GL_DEPARTMENT_NUM  ,
  t.ADDL_CHARGE        ,
  t.QUANTITY           ,
  t.PRICE              ,
  t.GROSS_AMOUNT       ,
  t.MEXICO_ORIG_AMT    ,
  t.FREIGHT            ,
  t.WAREHOUSE_NUM      ,
  t.ASSET_NUM          ,
  t.AFE_NUM            ,
  t.TRANSACTION_CODE   ,
  t.ACCOUNT_TYPE       ,
  t.BATCH_NUMBER       ,
  t.REFERENCE_NUMBER   ,
  t.PE_MONTH           ,
  t.PE_CENTURY         ,
  t.PE_YEAR            ,
  t.YYMMDD_OF_UPDATE   ,
  t.TIME_OF_UPDATE     ,
  t.USER_ID            ,
  t.CHECK_NUMBER       ,
  t.CHECK_MONTH        ,
  t.CHECK_DAY          ,
  t.CHECK_CENTURY      ,
  t.CHECK_YEAR         ,
  t.CHECK_STATUS       ,
  t.CHECK_CODE         ,
  t.ARS_ID             ,
  t.DATE_ADDED         ,
  t.TIME_ADDED         ,
  t.USER_ADDED         ,
  t.PROG_NAME          ,
  t.DATE_CHGD          ,
  t.TIME_CHGD          ,
  t.USER_CHGD          ,
  t.PROG_NAME2         ,
   t.INVOICE_DESCR     ,
    t.ENTERED_MONTH     ,
    t.ENTERED_DAY       ,
    t.ENTERED_CENTURY   ,
    t.ENTERED_YEAR      ,
    t.DISCOUNT          ,
    t.MEXICO_IVA        ,
    t.SPECIAL_HANDLING  ,
    t.MEMO_REF_NUM       )
VALUES ( s.COMPANY            ,
  s.DIVISION           ,
  t.REGION_1           ,
  t.REGION_2           ,
  t.INVOICE_LINE_NUM   ,
  s.VENDOR             ,
  s.INVOICE_NUMBER     ,
  s.INVOICE_MONTH      ,
  s.INVOICE_DAY        ,
  s.INVOICE_CENTURY    ,
  s.INVOICE_YEAR       ,
  s.DUE_MONTH          ,
  s.DUE_DAY            ,
  s.DUE_CENTURY        ,
  s.DUE_YEAR           ,
  s.PO_NUMBER          ,
  t.PO_LINE_NUM        ,
  t.PRODUCT_GROUP_NUM  ,
  t.PRODUCT_NUM        ,
  t.GL_NUM             ,
  t.GL_BRANCH_NUM      ,
  t.GL_DEPARTMENT_NUM  ,
  t.ADDL_CHARGE        ,
  t.QUANTITY           ,
  t.PRICE              ,
  s.GROSS_AMOUNT       ,
  s.MEXICO_ORIG_AMT    ,
  s.FREIGHT            ,
  t.WAREHOUSE_NUM      ,
  t.ASSET_NUM          ,
  t.AFE_NUM            ,
  s.TRANSACTION_CODE   ,
  s.ACCOUNT_TYPE       ,
  s.BATCH_NUMBER       ,
  s.REFERENCE_NUMBER   ,
  s.PE_MONTH           ,
  s.PE_CENTURY         ,
  s.PE_YEAR            ,
  s.DATE_STAMP   ,
  s.TIME_STAMP     ,
  s.USERNAME            ,
  s.CHECK_NUMBER       ,
  s.CHECK_MONTH        ,
  s.CHECK_DAY          ,
  s.CHECK_CENTURY      ,
  s.CHECK_YEAR         ,
  s.STATUS_CODE       ,
  s.CHECK_CODE         ,
  s.ARS_ID             ,
  s.DATE_ADDED         ,
  s.TIME_ADDED         ,
  s.USER_ADDED         ,
  s.PROG_NAME          ,
  s.DATE_CHGD          ,
  s.TIME_CHGD          ,
  s.USER_CHGD          ,
  s.PROG_NAME2         ,
   s.INVOICE_DESCR     ,
    s.ENTERED_MONTH     ,
    s.ENTERED_DAY       ,
    s.ENTERED_CENTURY   ,
    s.ENTERED_YEAR      ,
    s.DISCOUNT          ,
    s.MEXICO_IVA        ,
    s.SPECIAL_HANDLING  ,
    s.MEMO_REF_NUM 
  )

                                  

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