|| $self->ut_foreign_keyn('commission_agentnum', 'agent', 'agentnum')
|| $self->ut_foreign_keyn('commission_salesnum', 'sales', 'salesnum')
|| $self->ut_foreign_keyn('commission_pkgnum', 'cust_pkg', 'pkgnum')
+ || $self->ut_foreign_keyn('commission_invnum', 'cust_bill', 'invnum')
;
return $error if $error;