developing, with the processor at the host computer system, a security test scheme having a set of test requirements {HEAD ~ whose satisfaction} by the merchant entity is sufficient to ensure {TAIL ~ compliance} with the sets of security requirements defined by each of the plurality of payment processing organizations 
is sufficient to ensure
developing , with the processor at the host computer system , a security test scheme having a set of test requirements { HEAD ~ whose satisfaction } by the merchant entity is sufficient to ensure { TAIL ~ compliance } with the sets of security requirements defined by each of the plurality of payment processing organizations
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH 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 OTH OTH OTH