What is the factor that affects the operation of the planning and quality control and quality assurance process in the factory?

Factors affecting Quality - Money, Materials, Management, People, Market, Machine & Methods. QC is Product oriented whereas QA is process oriented.

Factors affecting operation planning - Sudden change in the planning, Resource shortage, Machine breakdown, etc.

Factors affecting Quality - Money, Materials, Management, People, Market, Machine & Methods. QC is Product oriented whereas QA is process oriented.