The security test scheme includes {HEAD ~ a set} of {TAIL ~ test requirements} whose satisfaction by the merchant entity is sufficient to ensure compliance with a multiple sets of security requirements defined by multiple payment processing organizations 
The security test scheme includes { HEAD ~ a set } of { TAIL ~ test requirements } whose satisfaction by the merchant entity is sufficient to ensure compliance with a multiple sets of security requirements defined by multiple payment processing organizations
OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL 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