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

## SYSLOG Details
- **Message**: Unable to update process PID file: <variable>error-message</variable>
- **Help**: lacpd could not update PID file
- **Description**: The Link Aggregation Control Protocol process (lacpd) attempted to update the file that records its process ID (PID), which serves to prevent multiple instances of lacpd from running simultaneously. The attempt failed.
- **Type**: SNO: Should Not Occur
- **Severity**: error
- **Cause**: -
- **Action**: -
- **Attributes**: error-message
- **Facility**: LOG_DAEMON

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