The PCI Data Security Standard Self-Assessment Questionnaire is a validation tool intended to assist merchants and service providers who are permitted by the payment brands to self-evaluate their compliance with the Payment Card Industry Data Security Standard (PCI DSS). There are four versions of the PCI DSS SAQ to choose from to meet your business need. . See ?Selecting the SAQ and Attestation that Best Apply to Your Organization? in the Self- Assessment Questionnaire Instructions and Guidelines. https://www.pcisecuritystandards.org/documents/pci_dss_saq_instr_guide_v2.0.pdf