If TPIA (the third party inspection agency) is employed by the customer and is on behalf of the customer, or work on behalf of customer, the TPI does not replace or substitute facility's own inspection processes and it would be equivalent to have the customer performing a source inspection, TPI's activity is dependent of facility, it does not waiver facility's responbility for product conformance, in this case, TPI is not within facility's QMS, it does not belong to outsourcing or purchasing.