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Additional info:
Please note that if your platform will not be using PayHQ’s HPP module, then your company will need to complete the PCI DSS questionnaire for Service Providers to validate your adherence to PCI DSS with a Qualified Security Assessor (QSA)
▪ You can find a list of approved QSAs here: https://www.pcisecuritystandards.org/assessors_and_solutions/qualified_security_assessors
https://github.com/Payfirma/HostedPayPage#steps-to-setup-hpp-on-payhq