+ New ENUM field: paymentmethod(cc,echeck);

+ New ENUM field: paymentmethod(cc,echeck);
    Store in database and when calling authorize_action() pass this method. Hence, removed $method=AN_METHOD_CC from this function.
    If a refund will be do, unset($order->paymentmethod); Because this field comes when joining(enrol_authorize)

+ AN_METHOD_CC and AN_METHOD_ECHECK is now lower case, because these fields are stored in database as enum.
  Eloy's response:
   They are lowercase because we decided to use lowercase identifiers everywhere and enum contents are,
   from a DB perspective, identifiers.

  Ok, NP. :)) set_config('an_acceptmethods', strtolower($CFG->an_acceptmethods)); solves this.