AP Bills Payable Maturity Date

SELECT cbb.bank_name, ac.bank_account_name, cep.payment_document_name, 
              ac.check_number, TO_CHAR(ac.check_date,'DD-MON-YY') check_date,TO_CHAR(ac.future_pay_due_date,'DD-MON-YY') future_pay_due_date, 
              cba.currency_code account_currency, 
              nvl(decode(ac.currency_code, cba.currency_code, ac.amount,
                                 ap_utilities_pkg.ap_round_currency((ac.amount * ac.exchange_rate), 
                                                                           asp.base_currency_code)), 0) payment_amount,
              ac.amount trans_amount, ac.currency_code trans_curr, hzp.party_name,  
              ac.vendor_site_code,
              ac.exchange_rate
FROM    ce_bank_branches_v cbb, ce_bank_accounts cba, ce_bank_acct_uses_all cbau,
              ce_payment_documents cep, ap_checks ac, ap_system_parameters asp, hz_parties hzp
WHERE  cbb.branch_party_id = cba.bank_branch_id
AND      cba.bank_account_id = cbau.bank_account_id
AND      cbau.bank_acct_use_id  = ac.ce_bank_acct_use_id
AND      cep.payment_document_id (+) = ac.payment_document_id
AND      ac.status_lookup_code = 'ISSUED'
AND      ac.future_pay_due_date <= nvl(:P_maturity_date, ac.future_pay_due_date)
AND      ac.ce_bank_acct_use_id = nvl(:P_ce_bank_acct_use_id, ac.ce_bank_acct_use_id)
AND      ac.party_id = nvl(:P_party_id, ac.party_id)
AND      ac.party_id = hzp.party_id
AND     (:P_vendor_site_id is NULL  OR
             (:P_vendor_site_id IS NOT NULL and ac.vendor_site_id = :P_vendor_site_id)
            ) 
ORDER BY cbb.bank_name, cba.bank_account_name, ac.future_pay_due_date, 
                  cba.currency_code, cep.payment_document_name, ac.check_number