Introduction for CAR Number Types This Corrective Action Reporting number type refers to the number of the document that resulted in the corrective action. While the Corrective Action Reporting itself has a number assigned to it, there is usually another document that originates the corrective action. This document may be an RMA (Returned Material Authorization) report from the customer (e.g.  RMA # 0112), and the Corrective Action Reporting Number type would be “RMA Number”. The source document may be a DMR (Discrepant Material Return) originated by production inspection or incoming inspection. The Corrective Action Reporting number type would be “DMR Number” to describe the number identified in the Corrective Action Reporting report. The number type is used solely to identify the source of the numbered document referred to in the Corrective Action Reporting.