The following variables must not be used in the call (POST) to the DIBS Payment Window, since these are already used internally within the window:
status, step, rid, paytype, authkey, transact, cardtype, expmon, expyear, cardno, cvc, phoneno, fee, modulook
Parameters which are sent to the DIBS Payment Window must not be used as declared CGI parameters at accepturl, cancelurl and callbackurl. The same applies to the following parameters which are automatically returned to accepturl, cancelurl and callbackurl:
merchant, amount, currency, orderid, accepturl, opener, test, cancelurl, callbackurl, http_cookie, lang, calcfee, ordertext, delivery1..deliveryN, ordline0-1..ordlineN-M, priceinfo1..priceinfoN, transact, authkey, suspect, fee, severity
We strongly recommend that you refrain from using words that are normally used in HTML or JavaScript as names for variable names, e.g., submit, onclick, etc.