What is the purpose of the Supplier Assessments and Reviews control in the NIST 800-53...

In NIST SP 800-53 Rev. 5,SR-6: Supplier Assessments and Reviewsrequires evaluating and monitoring suppliers’ security and risk practices.

Exact extract (NIST SP 800-53 Rev. 5, SR-6):

“The organization assesses and monitors suppliers to ensure they are meeting the security requirements specified in contracts and agreements.”

This is aboutongoing monitoringof supplier adherence, not financial audits, not contract creation, and not supplier discovery.