Query to get Tax details from invoice in oracle apps r12

1) Below is the query to get tax details from invoice:

  SELECT  lines.TAX_AMT,lines.tax_rate   
         FROM zx_lines lines,ra_customer_trx_all rct,ra_customer_trx_lines_all rl,
 ZX_TAXES_B ZTB,GL_DAILY_CONVERSION_TYPES gc
  where rct.trx_number=:TRX_NUMBER  and rct.customer_trx_id=lines.trx_id
 and rct.customer_trx_id       = rl.customer_trx_id
  and ZTB.Exchange_Rate_Type=gc.conversion_type
  and ztb.tax_id=lines.tax_id
  AND RL.LINE_TYPE='LINE'
  and rct.org_id=:P_ORG_ID
  and lines.trx_line_id=rl.customer_trx_line_id
  and rl.customer_trx_line_id=:customer_trx_line_id;

2) For Standard and Blanket PO:

    ---for tax rate and amount
      SELECT tax_rate  , tax_amt 
(SELECT  lines.tax_rate  ,lines.tax_amt
      FROM   po_headers_all poh,
       po_lines_all pol , po_line_locations_all plla ,zx_lines Lines
--WHERE (poh.segment1 = :p_po_no OR :p_po_no IS NULL)
WHERE  poh.PO_HEADER_ID=:po_header_id1
AND POL.PO_LINE_ID=:L_PO_LINE_ID
AND    poh.org_id = :p_org_id
AND    pol.po_header_id = poh.po_header_id
AND    pol.org_id = poh.org_id
   and lines.trx_id=poh.po_header_id and lines.trx_line_id=plla.line_location_id
  and pol.po_line_id=plla.po_line_id 
--AND    poh.authorization_status = 'APPROVED'
AND    :p_report_type = 'STANDARD'
AND    pol.quantity > 0  --- version 115.2 added this condition to show only those lines which are open/not fully cancelled
UNION ALL
SELECT  lines.tax_rate  ,lines.tax_amt
      FROM   po_headers_all poh,
       po_lines_all pol,
       po_distributions_all pod,
       po_releases_all prl,po_line_locations_all  pll,
   zx_lines lines
--WHERE (poh.segment1 = :p_po_no OR :p_po_no IS NULL)
WHERE  poh.PO_HEADER_ID=:po_header_id1
AND    poh.org_id = :p_org_id
--AND    poh.authorization_status = 'APPROVED'
AND    pol.po_header_id = poh.po_header_id
AND    pol.org_id = poh.org_id
AND    pod.po_header_id = pol.po_header_id
AND    pod.po_line_id = pol.po_line_id
AND    pod.org_id = pol.org_id
AND    prl.po_release_id = pod.po_release_id
AND    prl.po_header_id = pod.po_header_id
AND    prl.org_id = pod.org_id
and lines.trx_id=prl.po_release_id
and lines.trx_line_id=pll.line_location_id
AND    :p_report_type = 'BLANKET'
AND    ( prl.po_release_id  =NVL( :po_release_id1,prl.po_release_id))
and pol.po_line_id =:L_PO_LINE_ID
AND PRL.RELEASE_NUM =NVL(:P_RELEASE_NO,PRL.RELEASE_NUM)
and pll.po_line_id=pol.PO_LINE_ID
and pll.PO_HEADER_ID=pol.PO_HEADER_ID
and pll.LINE_LOCATION_ID=pod.line_location_id
and NVL(pll.CANCEL_FLAG,'N')='N'
--and not exists (select 1 from PO_LINE_LOCATIONS_RELEASE_V pllr
--where pllr.PO_RELEASE_ID=prl.PO_RELEASE_ID
--and nvl(QUANTITY_CANCELLED,0)<>0)

) a;