A set of {HEAD ~ security requirements} defining {TAIL ~ protocols} for implementing commercial transactions over the shared network using instruments identified with the payment processing organization is received from each of a plurality of payment processing organizations 
defining
A set of { HEAD ~ security requirements } defining { TAIL ~ protocols } for implementing commercial transactions over the shared network using instruments identified with the payment processing organization is received from each of a plurality of payment processing organizations
OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH