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

## SYSLOG Details
- **Message**: Failed to get instance index
- **Help**: Failed to generate instance index
- **Description**: No free instance indexes are available.
- **Type**: SNO: Should Not Occur
- **Severity**: error
- **Cause**: -
- **Action**: -
- **Attributes**: -
- **Facility**: LOG_DAEMON

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