AR and OM link in oracle apps / AR transaction and Sales Order join query

SELECT
    rcta.customer_trx_id,
    rcta.trx_number,
    rcta.trx_date,
    ac.customer_name,
    rctla.line_number inv_line_number,
    rctla.unit_selling_price inv_unit_selling_price,
    ooha.header_id,
    ooha.order_number,
    oola.line_number so_line_number,
    oola.line_id,
    oola.ordered_item,
    oola.ordered_quantity * oola.unit_selling_price so_amount
FROM
    apps.ra_customer_trx_all rcta,
    apps.ra_customer_trx_lines_all rctla,
    apps.ar_customers ac,
    apps.oe_order_headers_all ooha,
    apps.oe_order_lines_all oola
WHERE
    1 = 1
    AND   rcta.customer_trx_id = rctla.customer_trx_id
    AND   rcta.bill_to_customer_id = ac.customer_id
    AND   ooha.header_id = oola.header_id
    AND   rctla.interface_line_attribute6 = TO_CHAR(oola.line_id)
    AND   rctla.interface_line_attribute1 = TO_CHAR(ooha.order_number)
    AND   rcta.trx_number = nvl(:p_trx_number,rcta.trx_number)
    AND   ooha.order_number = nvl(:p_order_number,ooha.order_number);