SQL for AR Invoice Balance

-- SQL to Figure out the Invoice Balance.
SELECT rta.TRX_NUMBER ,xxfact.* ,ps.amount_due_remaining-- NVL (SUM (ps.amount_due_remaining), 0) invoice_balance
FROM ra_cust_trx_types_all rtt,
ra_customer_trx_all rta,
ra_cust_trx_line_gl_dist_all rgld,
gl_code_combinations cc,
hz_cust_accounts_all cust_acct,
ar_payment_schedules_all ps,
hz_cust_acct_sites_all acct_site,
hz_party_sites party_site,
hz_locations loc,
hz_cust_site_uses_all site_uses,
BOLINF.XX_MTSN_AR_FACTS_HDR_STG  xxfact
WHERE xxfact.PROCESS_STATUS='P'
and rta.TRX_NUMBER =xxfact.invoice_number
and rta.TRX_NUMBER in(
'9607549','9607549','9553904','9539375',
'8585991','8253017','7609696',
'7080387','6653404','5313598',
'4785453','3965052','3429136',
'3399680','2871815','2675303',
'2455262','2186174','1660375')
--TRUNC (ps.gl_date) <= :p_as_of_date
--AND cust_acct.account_number = :p_account_number
AND ps.customer_id = cust_acct.cust_account_id
AND ps.cust_trx_type_id = rtt.cust_trx_type_id
--AND ps.trx_date <= :p_as_of_date
AND ps.CLASS NOT IN ('CM', 'PMT')
AND site_uses.site_use_code = 'BILL_TO'
AND acct_site.party_site_id = party_site.party_site_id
AND loc.location_id = party_site.location_id
AND NVL (site_uses.status, 'A') = 'A'
AND cust_acct.cust_account_id = acct_site.cust_account_id
AND acct_site.cust_acct_site_id = site_uses.cust_acct_site_id
AND ps.customer_id = acct_site.cust_account_id
AND ps.customer_site_use_id = site_uses.site_use_id
AND rta.customer_trx_id = ps.customer_trx_id
AND rta.customer_trx_id = rgld.customer_trx_id
AND rgld.code_combination_id = cc.code_combination_id AND rgld.account_class = 'REV'

--------------------------------------------------
-- Query for Credit Memo Balance

SELECT NVL (SUM (ps.amount_due_remaining), 0) cr_memo_balance
FROM ra_cust_trx_types_all rtt,
ra_customer_trx_all rta,
ra_cust_trx_line_gl_dist_all rgld,
gl_code_combinations cc,
hz_cust_accounts_all cust_acct,
ar_payment_schedules_all ps,
hz_cust_acct_sites_all acct_site,
hz_party_sites party_site,
hz_locations loc,
hz_cust_site_uses_all site_uses
WHERE TRUNC (ps.gl_date) <= :p_as_of_date
AND cust_acct.account_number = :p_account_number
AND ps.customer_id = cust_acct.cust_account_id
AND ps.cust_trx_type_id = rtt.cust_trx_type_id
AND ps.trx_date <= :p_as_of_date
AND ps.CLASS = 'CM'
AND ps.status = 'OP'
AND site_uses.site_use_code = 'BILL_TO'
AND site_uses.cust_acct_site_id = acct_site.cust_acct_site_id
AND acct_site.party_site_id = party_site.party_site_id
AND loc.location_id = party_site.location_id
AND NVL (site_uses.status, 'A') = 'A'
AND cust_acct.cust_account_id = acct_site.cust_account_id
AND acct_site.cust_acct_site_id = site_uses.cust_acct_site_id
AND ps.customer_id = acct_site.cust_account_id
AND ps.customer_site_use_id = site_uses.site_use_id
AND rta.customer_trx_id = ps.customer_trx_id
AND rta.customer_trx_id = rgld.customer_trx_id
AND rgld.code_combination_id = cc.code_combination_id
AND rgld.account_class = 'REV'