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

## SYSLOG Details
- **Message**: Version mismatch:  chassisd message version <variable>expected-value</variable>  <variable>fru-name</variable> <variable>fru-slot</variable> message version <variable>received-value</variable>  local IPC version <variable>local-ipc-version</variable>  remote IPC version <variable>remote-ipc-version</variable>
- **Help**: chassisd encountered an unexpected version
- **Description**: As a component (field-replaceable unit, or FRU) comes online, the chassis process (chassisd) verifies that the FRU's revision level or version is supported. The revision level of the indicated FRU was unsupported or otherwise invalid.
- **Type**: Error: An error occurred
- **Severity**: error
- **Cause**: Either a previous software upgrade did not complete successfully, or the chassisd process or FRU did not restart after a successful software upgrade.
- **Action**: Upgrade the software and reboot the routing platform.
- **Attributes**: expected-value
fru-name
fru-slot
received-value
local-ipc-version
remote-ipc-version
- **Facility**: LOG_DAEMON

## Found this message in the following releases:
- [Junos OS 26.2R1](https://apps.juniper.net/syslog-explorer/?msg=CHASSISD_VERSION_MISMATCH&sw=Junos%20OS&rel=26.2R1)
- [Junos OS 25.4R1](https://apps.juniper.net/syslog-explorer/?msg=CHASSISD_VERSION_MISMATCH&sw=Junos%20OS&rel=25.4R1)
- [Junos OS 25.2R2](https://apps.juniper.net/syslog-explorer/?msg=CHASSISD_VERSION_MISMATCH&sw=Junos%20OS&rel=25.2R2)
- [Junos OS 25.2R1](https://apps.juniper.net/syslog-explorer/?msg=CHASSISD_VERSION_MISMATCH&sw=Junos%20OS&rel=25.2R1)
- [Junos OS 24.4R2](https://apps.juniper.net/syslog-explorer/?msg=CHASSISD_VERSION_MISMATCH&sw=Junos%20OS&rel=24.4R2)
- [Junos OS 24.4R1](https://apps.juniper.net/syslog-explorer/?msg=CHASSISD_VERSION_MISMATCH&sw=Junos%20OS&rel=24.4R1)
- [Junos OS 24.2R2](https://apps.juniper.net/syslog-explorer/?msg=CHASSISD_VERSION_MISMATCH&sw=Junos%20OS&rel=24.2R2)
- [Junos OS 24.2R1](https://apps.juniper.net/syslog-explorer/?msg=CHASSISD_VERSION_MISMATCH&sw=Junos%20OS&rel=24.2R1)
- [Junos OS 23.4R2](https://apps.juniper.net/syslog-explorer/?msg=CHASSISD_VERSION_MISMATCH&sw=Junos%20OS&rel=23.4R2)
- [Junos OS 23.4R1](https://apps.juniper.net/syslog-explorer/?msg=CHASSISD_VERSION_MISMATCH&sw=Junos%20OS&rel=23.4R1)
- [Junos OS 23.2R2](https://apps.juniper.net/syslog-explorer/?msg=CHASSISD_VERSION_MISMATCH&sw=Junos%20OS&rel=23.2R2)
- [Junos OS 23.2R1](https://apps.juniper.net/syslog-explorer/?msg=CHASSISD_VERSION_MISMATCH&sw=Junos%20OS&rel=23.2R1)
- [Junos OS 22.4R3](https://apps.juniper.net/syslog-explorer/?msg=CHASSISD_VERSION_MISMATCH&sw=Junos%20OS&rel=22.4R3)
- [Junos OS 22.4R2](https://apps.juniper.net/syslog-explorer/?msg=CHASSISD_VERSION_MISMATCH&sw=Junos%20OS&rel=22.4R2)
- [Junos OS 22.4R1](https://apps.juniper.net/syslog-explorer/?msg=CHASSISD_VERSION_MISMATCH&sw=Junos%20OS&rel=22.4R1)
- [Junos OS 22.2R3](https://apps.juniper.net/syslog-explorer/?msg=CHASSISD_VERSION_MISMATCH&sw=Junos%20OS&rel=22.2R3)
- [Junos OS 22.2R2](https://apps.juniper.net/syslog-explorer/?msg=CHASSISD_VERSION_MISMATCH&sw=Junos%20OS&rel=22.2R2)
- [Junos OS 22.2R1](https://apps.juniper.net/syslog-explorer/?msg=CHASSISD_VERSION_MISMATCH&sw=Junos%20OS&rel=22.2R1)