The following lines contain the word 'select', 'insert', 'update' or 'delete':
SELECT tax_method_code
INTO l_tax_method
FROM zx_product_options;
SELECT tax_method_code,
org_id
INTO l_tax_method,
l_org_id
FROM zx_product_options;
SELECT ctt.global_attribute4
INTO l_tax_code
FROM ra_cust_trx_types_all ctt,
ar_vat_tax_all vt
WHERE ctt.cust_trx_type_id = p_trx_type_id
AND ctt.org_id = vt.org_id
AND ctt.org_id = l_org_id
AND ctt.global_attribute4 = vt.tax_code
AND vt.set_of_books_id = p_set_of_books_id
AND p_trx_date between vt.start_date
and nvl(vt.end_date,p_trx_date)
AND nvl(vt.enabled_flag,'Y') = 'Y'
AND nvl(vt.tax_class,'O') = 'O';