+Credit card CVV2 number (1.5+ or 1.4.2 with CVV schema patch)
+
+=item paydate
+
+Expiration date for CARD/DCRD
+
+=item payname
+
+Exact name on credit card for CARD/DCRD, bank name for CHEK/DCHK
+
+=item invoicing_list
+
+comma-separated list of email addresses for email invoices. The special value 'POST' is used to designate postal invoicing (it may be specified alone or in addition to email addresses),
+
+=item referral_custnum
+
+referring customer number
+
+=item pkgpart
+
+pkgpart of initial package