# [COSD_DEVICE_MISSING](https://apps.juniper.net/syslog-explorer/?msg=COSD_DEVICE_MISSING)

## SYSLOG Details
- **Message**: Cannot locate device [index <variable>interface-device-index</variable>, unit <variable>sub-unit-id</variable>]
- **Help**: COSD failed to locate interface
- **Description**: COSD maintains an internal database of all the interfaces in the system. COSD is notified of some event on this interface but this interface is not present in its database.
- **Type**: Internal: Internal log message
- **Severity**: warning
- **Cause**: Event sequencing issue.
- **Action**: Contact your technical support representative.
- **Attributes**: interface-device-index
sub-unit-id
- **Facility**: LOG_DAEMON

## Found this message in the following releases:
- [Junos OS 24.2R1](https://apps.juniper.net/syslog-explorer/?msg=COSD_DEVICE_MISSING&sw=Junos%20OS&rel=24.2R1)
- [Junos OS 23.4R1](https://apps.juniper.net/syslog-explorer/?msg=COSD_DEVICE_MISSING&sw=Junos%20OS&rel=23.4R1)