Those are all found properties which seems to be "static" for one payment
service.

Follows:
  * http://www.payzen.eu/integration/document/2.2Guide_d_implementation_formulaire_paiement_V2-1-ENG-Payzen.pdf
  * http://www.payzen.eu/integration/document/Guide_technique_d_implementation_standardWebservices_Payzen_ENG.pdf
  * http://www.payzen.eu/integration/document/2.2_Guide_d_implementation_formulaire_Paiement_V2_Parametrage_Avance_Payzen_ENG.pdf