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