Training Course: PCI Security Standards Council, Payment Application Qualified Security Assessor (PA-QSA)
Payment Application Qualified Security Assessor (PA-QSA) companies are organizations that have been qualified by the Council to have their employees assess compliance to the PCI PA-DSS standard. Payment Application Qualified Security Assessors are employees of these organizations who have been certified by the Council to validate an entity’s adherence to the PCI PA-DSS.
https://www.pcisecuritystandards.org/pdfs/course_description_for_pa-qsa_v3.pdf