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

## SYSLOG Details
- **Message**: <variable>function-name</variable>:WARNING!!!  MPC CPLD, REV <variable>cpld-rev</variable>, upgrade is recommended.
- **Help**: Cpld revision is too old, upgrade recommended
- **Description**: Clock source is valid only if the revision of the Neo Boot CPLD is greater or equal to 9
- **Type**: Internal: Internal log message
- **Severity**: notice
- **Cause**: -
- **Action**: -
- **Attributes**: function-name
cpld-rev
- **Facility**: LOG_PFE

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