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

## SYSLOG Details
- **Message**: unknown option <variable>option</variable>
- **Help**: Invalid arguments for cosd process
- **Description**: Invalid arguments were passed for cosd process at start up time.
- **Type**: SNO: Should Not Occur
- **Severity**: error
- **Cause**: Invalid arguments for the process at startup time
- **Action**: Contact your technical support representative.
- **Attributes**: option
- **Facility**: LOG_DAEMON

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