Why should companies perform a second-party audit of their supplier’s QMS?

ISO 9001 Certification in Kenya is the latest update in a long queue of standard prerequisites for executing a Quality Management System (QMS); and, all along, one major selling point was that an organization would not have to review the QMS of a provider that was affirmed to ISO 9001. The reasoning was, if an outsider was confirming that their Quality Management System met the prerequisites of the ISO 9001 norm, then, at that point clients of that organization would not have to review them. Numerous organizations have utilized this methodology and totally taken out the utilization of second-party reviews from their production network the executive’s procedure; notwithstanding, is this the right methodology? Do you have to review everything in the provider's QMS? The guarantee of diminished second-party reviews with ISO 9001 affirmation is for the most part evident; if a provider has a QMS that is ensured by an outsider review to be consistent with the ISO 9001:2015 prerequi...