Why does FDA requires manufacturers of certain RED products to have an accession number for their product prior to marketing it in the United States?

Online vendors such as Amazon require documentation of a U.S. Food and Drug Administration (FDA) accession number for certain laser products sold through their online platforms. An accession number is a unique identifier that FDA uses to track reports from specific models of radiation-emitting electronic devices (RED). FDA requires manufacturers of certain RED products to have an accession number for their product prior to marketing it in the United States.