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