The table tmnxSubErrMacTable contains information about certain errors detected by the subscriber management function. Conceptual rows in this table are created and destroyed by the system. The system maintains a limited number of conceptual rows; if adding a new row would exceed the limit, the oldest row is destroyed. The system may create a row in this table when it detects an error while processing a message received on an access interface. For more details about the errors that trigger the creation of a new row in this table, please consult the user documentation. The conceptual rows in this table are ordered by MAC address; this is the MAC address found in the received packet that identifies the remote device.