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